Remove and Install Rear Heat Exchanger

Pressure in cooling system
Release, by turning the radiator cap up to detent "1" and close again.

Vehicle
Raise.

Panelling behind front right-hand side member
Remove (6 screws).

Supply and return hoses (c and d)
Loosen, pull off hoses and drain coolant, blow out residual fluid with compressed air, seal openings.







Control unit
Remove. Service and Repair

Center console
Remove. Service and Repair

Plug connections N29/21 X 1, B10/11 X 1
Disconnect.

Heat exchanger temperature sensors B10/9 and B10/10
Remove.

Electrical harness in area of rear air conditioner
Expose.

Evaporator temperature sensor B10/11
Remove.

Blower housing
Remove. Service and Repair

Pipes on heat exchanger
Close, screws (23) and assemble with new O-rings.

Heat exchanger (22)
Release (screws 21).

Heat exchanger (22)
Remove.

Heater housing
Clean from inside, remove any coolant which may have escaped.

Install
In reverse sequence.

Coolant level
Correct.