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Home >> BMW >> 2011 >> X6 ActiveHybrid >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System - Repair (N63; ACTIVEHYBRID) >> Coolant, Checking Cooling System >> 17 00 008 Draining and adding coolant in radiator (N63 hybrid)

17 00 008 Draining and adding coolant in radiator (N63 hybrid)

Special tools required: 

WARNING: High-voltage system - danger to life!
WARNING: The following points must be strictly observed prior to starting work: 
WARNING: Risk of scalding!
Only carry out repair work on the cooling system after the engine has cooled down!
IMPORTANT: Lifetime coolant filling: 
Never reuse used coolant!
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be drained and refilled.
In the case of other removal work involving the draining of part quantities of coolant, replace these quantities which have been drained with new coolant.

Installation note: 

Use only recommended coolant. Refer to BMW parts catalogue.

Observe mixture ratio: 50 % antifreeze for anti-freezing protection down to -38 °C.

Protective measures/rules of conduct

IMPORTANT: 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!
IMPORTANT: Risk of skidding due to coolant on the floor.
Danger of injury! 

Catch and dispose of drained coolant in drip tray (1) and if necessary special tool 00 2 030 (universal hydraulic lifting equipment).

Recycling:

Observe country-specific waste disposal regulations.

Fig 1: Identifying Drip Tray And Special Tool (00 2 030)
G05476170Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Draining coolant: 

Open sealing cap (1) on coolant expansion tank (2).

Installation note: 

Close sealing cap (1) until the arrow marks line up.

Fig 2: Identifying Sealing Cap And Coolant Expansion Tank
G04794040Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and detach coolant hose (1) from radiator.

Drain, catch and dispose of coolant.

Fig 3: Identifying Radiator Coolant Hose
G08469883Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Adding coolant:
Use only recommended coolant. Refer to BMW parts catalogue.
Observe mixture ratio: 50 % antifreeze for anti-freezing protection down to -38 °C.
Observe bleeding instructions without fail: see  FILL AND VENT COOLING SYSTEM  
Visual inspection of cooling system for water-tightness.