Procedure steps

SPECIAL TOOLS AND TIGHTENING TORQUES: 

For additional information on special tools and tightening torques pertaining to this procedure, refer to the following:

• OVERVIEW OF TIGHTENING TORQUES 
• OVERVIEW SPECIAL TOOL 

PRE-PROCESSES: 

1. Install luggage compartment floor trim panel 
   • Place luggage compartment floor trim panel (1)  in the direction opposite to arrow.
     Fig 1: Installing Luggage Compartment Floor Trim Panel

     Courtesy of BMW OF NORTH AMERICA, INC.
2. Remove luggage compartment storage compartment 
   NOTE: Illustration similar.
   • Remove luggage compartment storage compartment in direction of arrow.
     Fig 2: Removing/Installing Luggage Storage Compartment

     Courtesy of BMW OF NORTH AMERICA, INC.
3. Disconnect battery ground cable 

   Prerequisite 

   Ignition switched off.

   • Slacken nut (1)  .
     NOTE: Risk of damage! Do not under any circumstances use force to pull off negative terminal.
   • Pull off battery ground cable with IBS towards the top, put to one side and secure.
     Fig 3: Identifying Slacken Nut Of Battery Ground Cable

     Courtesy of BMW OF NORTH AMERICA, INC.
4. Removing the acoustic cover 
   • Raise acoustic cover (1)  .
   • Remove acoustic cover (1)  in the direction of travel.
     Fig 4: Identifying Acoustic Cover

     Courtesy of BMW OF NORTH AMERICA, INC.
5. Remove front strut brace on left and right 
   NOTE: Description is for left component only. Procedure on the right side is identical.
   NOTE: Risk of damage to the body! Driving without the strut brace is not permitted!
   • Loosen screws (1)  .
   • Remove strut brace (2)  .
     Fig 5: Identifying Strut Brace And Screws

     Courtesy of BMW OF NORTH AMERICA, INC.
6. Remove intake port on left and right 
   NOTE: Description is for left component only. Procedure on the right side is identical.
   • Push in latch mechanism (1)  .
   • Feed out intake port (2)  upwards.
     Fig 6: Pushing Latch Mechanism

     Courtesy of BMW OF NORTH AMERICA, INC.
   • Push in latch mechanism (1)  .
   • Detach intake port (2)  towards rear and remove.
     Fig 7: Detaching Intake Port

     Courtesy of BMW OF NORTH AMERICA, INC.
7. Remove intake silencer housing on left and right 
   NOTE: Description is for left component only. Procedure on the right side is identical.
   • Unfasten clamp (1)  .
   • Disconnect connector (2)  at the hot film air mass meter.
   • Loosen clamp (3)  .
   • Unclip oxygen sensor cable from intake silencer housing.
   • Detach the intake air filter housing from the intake port and pull off upwards.
     Fig 8: Removing Intake Silencer Housing

     Courtesy of BMW OF NORTH AMERICA, INC.
8. Removing the electronics box cover 
   • Loosen screws (1)  .
   • Remove electronics box cover (2)  .
     Fig 9: Identifying Electronics Box Cover And Screws

     Courtesy of BMW OF NORTH AMERICA, INC.
9. Removing electronics box partially 
   • Unlock and remove all connectors (1)  from control unit.
   • Unclip grommet hold-down device (2)  and remove.
   • Detach rubber grommets (3)  from electronics box. Place wiring harnesses to one side.
     Fig 10: Identifying Connectors, Hold-Down Device, And Rubber Grommets

     Courtesy of BMW OF NORTH AMERICA, INC.
   • Unfasten nut (1)  .
   • Detach grounding cable (2)  .
     Fig 11: Identifying Battery Earth Lead And Nut

     Courtesy of BMW OF NORTH AMERICA, INC.
   • Loosen screw (1)  .
   • Lay filler neck (2)  for windscreen washer fluid to one side.
     Fig 12: Identifying Filler Neck And Screw

     Courtesy of BMW OF NORTH AMERICA, INC.
   • Loosen screws (1)  .
   • Unclip coolant lines from clamp (2)  on the electronics box.
     Fig 13: Identifying Electronics Box, Clamp, And Screws

     Courtesy of BMW OF NORTH AMERICA, INC.
     NOTE: Risk of damage! Do not under any circumstances kink or bend coolant lines.
   • Feed out complete electronics box (1)  along with control unit and coolant lines (2)  carefully upwards and put to one side.
     Fig 14: Identifying Electronics Box And Coolant Lines

     Courtesy of BMW OF NORTH AMERICA, INC.
10. Releasing left charge air hose on exhaust turbocharger 
    • Unfasten clamp (1)  .
    • Bend charge air pipe (2)  slightly to the side.
      Fig 15: Identifying Left Side Charge Air Pipe, Hose And Clamp

      Courtesy of BMW OF NORTH AMERICA, INC.
11. Releasing right charge air hose on exhaust turbocharger 
    • Unfasten clamp (1)  .
    • Bend charge air pipe (2)  slightly to the side.
      Fig 16: Identifying Right Side Charge Air Pipe, Hose And Clamp

      Courtesy of BMW OF NORTH AMERICA, INC.
12. Remove left clean air pipe. 
    • Version 1: 
    • 1. Unlock the retainer.
      2. At the same time, pull off connecting line from clean air pipe.
         Fig 17: Unlocking Retainer And Pulling Off Connecting Line

         Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
    • Lightly pull line (1)  in the direction of the arrow.

      Simultaneously, unlock the latch mechanisms (2)  one after the other using a screwdriver (3)  .

      Pull off connecting line from clean air pipe.

      Fig 18: Pulling Connecting Line Off Clean Air Pipe And Engine Crankcase Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Loosen screw (1)  .
    • Pull clean air pipe (2)  from exhaust turbocharger.
      Fig 19: Identifying Air Pipe And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
13. Remove right clean air pipe 
    • Version 1: 
    • 1. Unlock the retainer.
      2. At the same time, pull off connecting line from clean air pipe.
         Fig 20: Removing Right Side Clean Air Pipe

         Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
    • Lightly pull line (1)  in the direction of the arrow.

      Simultaneously, unlock the latch mechanisms (2)  one after the other using a screwdriver (3)  .

      Pull off connecting line from clean air pipe.

      Fig 21: Pulling Connecting Line Off Clean Air Pipe

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Loosen screw (1)  .
    • Pull clean air pipe (2)  from exhaust turbocharger.
      Fig 22: Identifying Clean Air Pipe And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
14. Partly remove oil reservoir for hydraulic steering 
    • Remove screw 1 on wheel arch.
    • Release screw (2) on expansion tank.
    • Remove washers.
    • Carefully lift oil reservoir and place to one side.
      Fig 23: Identifying Screws On Wheel Arch And Expansion Tank

      Courtesy of BMW OF NORTH AMERICA, INC.
15. Disconnect coolant hoses on expansion tank. 
    • Disconnect coolant hoses on expansion tank using generally available disconnecting tools.

      E.g. HAZET disconnect pliers (see table).

      HAZET no.:	Description
      4590-1	Length of disconnect pliers (mm): 150
      4590-2	Length of disconnect pliers (mm): 180
      4590-3	Length of disconnect pliers (mm): 253
      4590/2	Disconnect pliers set
      4590/3	Disconnect pliers set

      Fig 24: Identifying Hazet Pliers Set

      Courtesy of BMW OF NORTH AMERICA, INC.
16. Remove coolant expansion tank 
    • Release screw (1).
    • Release and disconnect coolant hoses (2).
    • Raise expansion tank (3)
      Fig 25: Identifying Expansion Tank, Coolant Hoses And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Unlock connector (1) on coolant level sensor and disconnect.
    • Remove expansion tank (2).
      Fig 26: Identifying Expansion Tank And Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
17. Partially remove heater valve for heating and air-conditioning unit 
    • Disconnect plug connection (1)  .
    • Pull water valve (2)  upwards out of holders.
      Fig 27: Identifying Water Valve And Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
18. Removing oxygen sensor connector holder/left high pressure pump connector 
    • Unclip connector (1)  and (2)  from holder.
    • Unlock and disconnect connectors (1)  and (2)  .
      Fig 28: Identifying O2 Sensor Connector Holder And Left High Pressure Pump Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Unlock and disconnect connector (1)  .
    • Unlock holder (2)  and feed out upwards.
      Fig 29: Identifying O2 Sensor Connector And Holder

      Courtesy of BMW OF NORTH AMERICA, INC.
19. Remove holder of oxygen sensor connector/high pressure pump connector, right 
    • Unclip connector (1)  and (2)  from holder.
    • Unlock and disconnect connectors (1)  and (2)  .
      Fig 30: Identifying O2 Sensor Connector Holder And Right High Pressure Pump Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Unlock and disconnect connector (1)  .
    • Unlock holder (2)  and feed out upwards.
      Fig 31: Identifying Right Side O2 Sensor Connector Holder

      Courtesy of BMW OF NORTH AMERICA, INC.
20. Removing carrier plate 
    • Loosen screws (1)  and (2)  .
    • Remove carrier plate (3)  upwards.
      Fig 32: Identifying Carrier Plate And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
21. Removing left carrier plate holder 
    • Loosen screws (1)  .
    • Feed out left carrier plate holder (2)  upwards.
      Fig 33: Identifying Left Side Carrier Plate Holder And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
22. Removing right carrier plate holder 
    • Loosen screws (1)  .
    • Feed out right carrier plate holder (2)  upwards.
      Fig 34: Identifying Right Side Carrier Plate Holder And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
23. Removing oil filler neck 
    • Loosen screws (1)  .
    • Remove oil filler neck (2)  .
      Fig 35: Identifying Oil Filler Neck And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.

    Keyprocesses 

24. Removing right connecting line 
    • Version 1: 
    • 1. Unlock the retainer.
      2. Simultaneously pull off the engine ventilation line from the actuating wire.
         Fig 36: Unlocking Retainer And Pulling Off Engine Ventilation Line

         Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
    • Lightly pull line (1)  in the direction of the arrow.

      Simultaneously, unlock the latch mechanisms (2)  one after the other using a screwdriver (3)  .

      Pull off the engine ventilation line from the connecting line.

      Fig 37: Unlocking Latch Mechanisms And Pulling Off Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Loosen screws (2)  .
    • Detach the connecting line (1)  from the cylinder head cover by pulling it upward.
      Fig 38: Detaching Connecting Line

      Courtesy of BMW OF NORTH AMERICA, INC.
25. Visual inspection for loose parts in the cylinder head cover 
    • Conduct visual inspection in marked area (1)  to check for loose parts.
    • Remove any loose parts that may be on the oil separator.
      Fig 39: Identifying Area For Visual Inspection

      Courtesy of BMW OF NORTH AMERICA, INC.
26. Removing engine ventilation line for cylinders 1-4 partially 
    • 1. Unlock the retainer.
      2. Simultaneously pull off the ventilation line from the intake system.
         Fig 40: Unlocking Retainer And Pulling Off Ventilation Line

         Courtesy of BMW OF NORTH AMERICA, INC.
    • Loosen screws (1)  .
    • Lift the engine wiring harness (2)  slightly and remove the engine ventilation line.
      Fig 41: Identifying Engine Wiring Harness And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
27. Removing left connecting line 
    • Version 1: 
    • 1. Unlock the retainer.
      2. Simultaneously pull off the engine ventilation line from the intake system.
         Fig 42: Unlocking Retainer And Pulling Off Engine Ventilation Line

         Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
    • Lightly pull line (1)  in the direction of the arrow.

      Simultaneously, unlock the latch mechanisms (2)  one after the other using a screwdriver (3)  .

      Pull off the engine ventilation line from the connecting line.

      Fig 43: Unlocking Latch Mechanisms And Pulling Off Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Loosen screws (2)  .
    • Detach the connecting line (1)  from the cylinder head cover by pulling it upward.
      Fig 44: Detaching Connecting Line

      Courtesy of BMW OF NORTH AMERICA, INC.
28. Visual inspection for loose parts in the cylinder head cover 
    • Conduct visual inspection in marked area (1)  to check for loose parts.
    • Remove any loose parts that may be on the oil separator.
      Fig 45: Identifying Area For Visual Inspection

      Courtesy of BMW OF NORTH AMERICA, INC.
29. Removing engine ventilation line for cylinders 5-8 partially 
    • 1. Unlock the retainer.
      2. Simultaneously pull off the engine ventilation line from the intake system.
    • Feed out and remove engine ventilation line.
      Fig 46: Unlocking Retainer And Pulling Off Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
30. Installing engine ventilation line for cylinders 5-8 partially 
    • Position engine ventilation line.
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert the engine ventilation line onto the intake system in the direction of the arrow.
      Fig 47: Positioning Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
31. Installing left connecting line 
    • Push connecting line (1)  from above into cylinder head cover.
    • Tighten down screws (2)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Connecting line on cylinder head cover
      M6 x 18	10 Nm

      Fig 48: Installing Left Connecting Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 1: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert connecting line onto engine ventilation line.
      Fig 49: Identifying Connecting Line, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert connecting line onto engine ventilation line.
      Fig 50: Identifying Connecting Line With Latch Mechanisms, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
32. Installing engine ventilation line for cylinders 1-4 partially 
    • Slightly lift engine wiring harness.

      Feed in engine ventilation line and position it properly.

      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert the engine ventilation line onto the intake system in the direction of the arrow.
      Fig 51: Positioning Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Position engine wiring harness (2)  .
    • Tighten the screws (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Engine wiring harness to engine
      M8	10 Nm

      Fig 52: Identifying Engine Wiring Harness And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
33. Installing right connecting line 
    • Push connecting line (1)  from above into cylinder head cover.
    • Tighten down screws (2)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Connecting line on cylinder head cover
      M6 x 18	10 Nm

      Fig 53: Pushing Connecting Line Into Cylinder Head Cover

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 1: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert connecting line onto engine ventilation line.
      Fig 54: Identifying Connecting Line, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Insert connecting line onto engine ventilation line.
      Fig 55: Identifying Connecting Line With Latch Mechanisms, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.

    Postprocesses 

34. Installing oil filler neck 
    • Position oil filler neck (2)  .
    • Tighten the screws (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Oil filler neck on cylinder head cover
      M6 x 20	8 Nm

      Fig 56: Identifying Oil Filler Neck And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
35. Installing right carrier plate holder 
    • Position right carrier plate holder (2)  .
    • Tighten the screws (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Carrier plate holder on cylinder head cover
      M6 x 20	8 Nm

      Fig 57: Identifying Right Side Carrier Plate Holder And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
36. Installing left carrier plate holder 
    • Position left carrier plate holder (2)  .
    • Tighten the screws (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Carrier plate holder on cylinder head cover
      M6 x 20	8 Nm

      Fig 58: Identifying Left Side Carrier Plate Holder And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
37. Installing carrier plate 
    • Position carrier plate (3)  .
    • Tighten down screws (1)  and (2)  .
      Fig 59: Identifying Carrier Plate And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
38. Installing oxygen sensor connector holder/right high pressure pump connector 
    • Connect holder (2)  to carrier plate from above.
    • Connect connector (1)  .
      Fig 60: Identifying Right Side O2 Sensor Connector Holder

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Connect connectors (1)  and (2)  .
    • Clip connectors (1)  and (2)  in the holder.
      Fig 61: Identifying O2 Sensor Connector Holder And Right High Pressure Pump Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
39. Installing oxygen sensor connector holder/left high pressure pump connector 
    • Connect holder (2)  to carrier plate from above.
    • Connect connector (1)  .
      Fig 62: Identifying O2 Sensor Connector And Holder

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Connect connectors (1)  and (2)  .
    • Clip connectors (1)  and (2)  in the holder.
      Fig 63: Identifying O2 Sensor Connector Holder And Left High Pressure Pump Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
40. Installing water valve for heater 
    • Check that the rubber mount (1)  and guide lug (2)  are properly seated in holders (3)  .
      Fig 64: Identifying Rubber Mount, Guide Lug And Holders

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Install water valve (2)  in the holders.
    • Connect connector (1)  .
      Fig 65: Identifying Water Valve And Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
41. Instal coolant expansion tank 
    • Position expansion tank (2)  in the dedicated area.
    • Connect connector (1)  to coolant level switch and lock.
      Fig 66: Identifying Expansion Tank And Connector

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Fully insert expansion tank (3)  .
    • Connect and lock coolant hoses (2)  .
    • If required, remove disconnect pliers from coolant hoses (2)  .
    • Tighten down screw (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Expansion tank to body
      M6	10 Nm

      Fig 67: Identifying Expansion Tank, Coolant Hoses And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
42. Fastening oil reservoir for hydraulic steering 
    • Position oil reservoir.
    • Install washers.
    • Release screw 2 on expansion tank.
      TIGHTENING TORQUE SPECIFICATION
      
      

      Oil reservoir to coolant expansion tank/holder
      M6	8 Nm

    • Tighten screw 1 on wheel arch.
      TIGHTENING TORQUE SPECIFICATION
      
      

      Oil reservoir to wheel arch
      M6 x 37	10 Nm

      Fig 68: Identifying Screws On Wheel Arch And Expansion Tank

      Courtesy of BMW OF NORTH AMERICA, INC.
43. Install right clean air pipe 
    • Check the gasket on the clean air pipe.
    • Replace faulty gasket.
    • Position clean air pipe (2)  on exhaust turbocharger.
    • Tighten down screw (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Clean air pie to turbocharger
      M6	10 Nm

      Fig 69: Identifying Clean Air Pipe And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 1: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Attach connecting line to clean air pipe.
      Fig 70: Identifying Connecting Line, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Attach connecting line (1)  with the latch mechanisms (2)  to clean air pipe.
      Fig 71: Identifying Connecting Line With Latch Mechanisms, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
44. Install left clean air pipe 
    • Check the gasket on the clean air pipe.
    • Replace faulty gasket.
    • Position clean air pipe (2)  on exhaust turbocharger.
    • Tighten down screw (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Clean air pie to turbocharger
      M6	10 Nm

      Fig 72: Identifying Clean Air Pipe And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 1: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Attach connecting line to clean air pipe.
      Fig 73: Identifying Connecting Line, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Version 2: 
      NOTE: Ensure correct locking of all the retaining lugs. Retaining lugs must audibly snap into place.
    • Attach connecting line (1)  with the latch mechanisms (2)  to clean air pipe.
      Fig 74: Identifying Connecting Line With Latch Mechanisms, Clean Air Pipe And Engine Ventilation Line

      Courtesy of BMW OF NORTH AMERICA, INC.
45. Fastening right charge air hose on exhaust turbocharger 
    • Check gasket between charge air hose and exhaust turbocharger.
    • Replace faulty gasket.
    • Position charge air hose (2)  on exhaust turbocharger.
    • Tighten clamp (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Charge air hose to exhaust turbocharger
      Screw clamp	3, 5 Nm

      Fig 75: Identifying Right Side Charge Air Pipe, Hose And Clamp

      Courtesy of BMW OF NORTH AMERICA, INC.
46. Fastening left charge air hose on exhaust turbocharger 
    • Check gasket between charge air hose and exhaust turbocharger.
    • Replace faulty gasket.
    • Position charge air hose (2)  on exhaust turbocharger.
    • Tighten clamp (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Charge air hose to exhaust turbocharger
      Screw clamp	3, 5 Nm

      Fig 76: Identifying Left Side Charge Air Pipe, Hose And Clamp

      Courtesy of BMW OF NORTH AMERICA, INC.
47. Install electronics box 
    NOTE: Risk of damage! Do not under any circumstances kink or bend coolant lines.
    • Carefully feed in electronics box (1)  with coolant lines (2)  .
    • Feed in the guide (3)  of the electronics box (1)  into the engine support.
      Fig 77: Identifying Electronics Box, Coolant Lines And Guide

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Clip coolant lines to clamp (2)  on the electronics box.
    • Tighten the screws (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Electronics box, lower section to body
      	8 Nm

      Fig 78: Identifying Electronics Box, Clamp, And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Position filler neck (2)  for the windscreen washer fluid.
    • Tighten down screw (1)  .
      Fig 79: Identifying Filler Neck And Screw

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Tighten nut (1)  of the grounding cable (2)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Grounding cable to ground connection
      M8	21 Nm

      Fig 80: Identifying Battery Earth Lead And Nut

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Attach rubber grommets (3)  in electronics box.
    • Connect all connectors (1)  on control unit and lock.
    • Clip grommet hold-down device (2)  .
      Fig 81: Identifying Connectors, Hold-Down Device, And Rubber Grommets

      Courtesy of BMW OF NORTH AMERICA, INC.
48. Installing the electronics box cover 
    • Position electronics box cover (2)  .
    • Tighten the screws (1)  .
      Fig 82: Identifying Electronics Box Cover And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
49. Install left and right intake silencer housing 
    NOTE: Description is for left component only. Procedure on the right side is identical.
    • Connect intake silencer housing on intake port.
    • Clip oxygen sensor cable in on intake silencer housing.
    • Install clamp (3)  .
    • Connect connector (2)  at the hot film air mass meter.
    • Tighten clamp (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Clamp to air duct
      	3 Nm

      Fig 83: Identifying Connector And Clamps

      Courtesy of BMW OF NORTH AMERICA, INC.
50. Installing the left and right intake port 
    NOTE: Description is for left component only. Procedure on the right side is identical.
    • Insert intake port (2)  towards the front.

      » Latch mechanism (1)  is locked.

      Fig 84: Inserting Intake Port

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Feed in intake port (2)  towards the bottom.

      » Latch mechanism (1)  is locked.

      Fig 85: Removing Intake Port

      Courtesy of BMW OF NORTH AMERICA, INC.
51. Installing the front left and right strut brace 
    NOTE: Description is for left component only. Procedure on the right side is identical.
    NOTE: Ensure correct installation position of the strut brace. Screw with washer is fitted at connection, front top.
    • Position strut brace (2)  .
    • Tighten screws (1) with torque and then tighten them using special tool 0 490 504 (00 9 120)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Suspension cross-brace in engine compartment, front
      M10 x 25	Tightening torque	56 Nm
      M10 x 47	Jointing torque	30 Nm
      Replace screws	Angle of rotation	90 °

      Fig 86: Identifying Strut Brace And Screws

      Courtesy of BMW OF NORTH AMERICA, INC.
52. Install acoustic cover 
    NOTE: Ensure correct fit!
    • Insert acoustic cover (1)  into existing rubber guides.
      Fig 87: Identifying Acoustic Cover

      Courtesy of BMW OF NORTH AMERICA, INC.
53. Filling coolant in the expansion tank 
    CAUTION: Materials harmful to health.
    Contact with fluids harmful to health!

    • Note and follow safety information on containers.
    • Conduct all work in appropriate personal protective equipment only.
    NOTE: For dirt contamination of the cooling system (e.g. by engine oil), the cooling system must be rinsed with water until all dirt contamination is removed!
    NOTE: Never reuse used coolant!
    NOTE: Use only recommended coolant. Observe mixture ratio. Observe capacities. Observe bleeding instructions.
    • Top up coolant until coolant level is at maximum.
      Fig 88: Identifying Max And Min Level

      Courtesy of BMW OF NORTH AMERICA, INC.
      NOTE: For more information, see COOLANT, CHECKING COOLING SYSTEM .
    • Vent cooling system.
    • Screw sealing cap (1) to coolant expansion tank. In this process, close the sealing cap (1) until the arrows are aligned.
      Fig 89: Identifying Sealing Cap

      Courtesy of BMW OF NORTH AMERICA, INC.
    • Check function of cooling system.
    • Visually inspect cooling system for tightness.
54. Connecting the battery ground cable 
    • Position battery earth lead with IBS on negative terminal.
    • Tighten nut (1)  .
      TIGHTENING TORQUE SPECIFICATION
      
      

      Battery earth lead
      M6	5 Nm

      Fig 90: Identifying Battery Earth Lead Nut

      Courtesy of BMW OF NORTH AMERICA, INC.
55. Install luggage compartment of storage compartment 
    NOTE: Illustration similar.
    • Install luggage compartment of storage compartment against the direction of arrow.
      Fig 91: Removing/Installing Luggage Storage Compartment

      Courtesy of BMW OF NORTH AMERICA, INC.
56. Install luggage compartment floor trim panel 
    • Place luggage compartment floor trim panel (1)  in the direction opposite to arrow.
      Fig 92: Installing Luggage Compartment Floor Trim Panel

      Courtesy of BMW OF NORTH AMERICA, INC.