600SEL (140.057) V12-6.0L (120.980) (1993)
Heater Core: Service and Repair
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. See: Heating and Air Conditioning/Control Assembly/Service and Repair
Center console
Remove. See: Body and Frame/Interior Moulding / Trim/Console/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