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Home >> BMW >> 2021 >> X4 M Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System -- Repair (F98) >> 17 51 Charge Air Cooler >> 17 51 000 Remove and install/replace charge air cooler (with manifold) >> Remove charge air cooler

Remove charge air cooler

WARNING: Working on 12 V electrical system. 
Risk of short circuits! Risk of fire! 
  • Make sure that there is no charger  connected to the jump start terminal in the engine compartment.
  • Detach battery ground lead from battery.
  • For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.
NOTE: RISK OF DAMAGE 
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS). 
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults. 
  • Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.

Preliminary work 

Bolts of the charge air cooler with collector 

Fig 1: Charge Air Cooler With Collector Bolts Loosening Sequence
G16272150Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Damage to wires when disconnecting connectors and plug connections. 
Sheared wires can cause a short circuit. 
  • Do not pull on wires when disconnecting connectors and plug connections.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE: TECHNICAL INFORMATION 
Additional coolant can leakage. Make sure that no coolant enters the intake port of the cylinder head.
G14926912Courtesy of BMW OF NORTH AMERICA, INC.
G14926915Courtesy of BMW OF NORTH AMERICA, INC.
G14926918Courtesy of BMW OF NORTH AMERICA, INC.
G14926921Courtesy of BMW OF NORTH AMERICA, INC.
G14926923Courtesy of BMW OF NORTH AMERICA, INC.