Preliminary Work
Information
The pictures shown in this document may differ from the original.
- Drain refrigerant.
> WM, 870317 DRAINING AND FILLING REFRIGERANT R1234YF - Coupe or WM, 870317 DRAINING AND FILLING REFRIGERANT R1234YF - Wagon
> WM, 870317 DRAINING AND FILLING REFRIGERANT R134A - Coupe or WM, 870317 DRAINING AND FILLING REFRIGERANT R134A - Wagon
- Disconnect the battery ground strap.
- Remove front trim panel (engine compartment).
> WM, 700219 REMOVING AND REINSTALLING FRONT TRIM PANEL (ENGINE COMPARTMENT) - Coupe or WM, 700219 REMOVING AND REINSTALLING FRONT TRIM PANEL (ENGINE COMPARTMENT) - Wagon
- Remove engine cover.
> 108319 REMOVING AND INSTALLING ENGINE COVER (DESIGN COVER) (V8 BITURBO)
> Refer to the appropriate Service Information for Removing and installing engine cover (design cover) (V6 biturbo)
- Loosen intake scoops -1-
.
- 5.1 Open screw-type clamps -2- and pull off intake scoops.
Intake scoop
- V8 Turbo only:
- 6.1 Remove air-cleaner cowl -1- .
- 6.2 Loosen screw-type clamps -3- and remove cowl.
Air-cleaner cowl
- Remove air guide -1-
at the radiator frame.
- 7.1 Loosen clips -2- .
- 7.2 Remove air guide by pulling it upwards.
Air guide at top of radiator frame
- Remove front wheel housing liners.
> WM, 505619 REMOVING AND INSTALLING FRONT WHEEL HOUSING LINER
WARNING: Refrigerant- Danger of freezing
→ Avoid contact with refrigerant.
→ Wear personal protective gear.
→ Observe the safety regulations for working on air-conditioned vehicles and handling refrigerant.
→ Observe the safety regulations for extraction and filling systems.
→ Observe the instructions for repairing air-conditioning systems and storing spare parts.
NOTE: Opened refrigerant system for repairs.- Moisture penetrated into the refrigerant system.
- Risk of contaminating the refrigerant circuit.
- Risk of saturation and irreparable damage to desiccator.
- Irreparable damage to the desiccator can damage the compressor and evaporator.
→ The desiccator must be replaced if the air humidity is high and if the refrigerant circuit is left open for a long time.
Information
- Open connections and lines must be closed off using suitable stoppers or caps.
- Danger of freezing
- Disconnect air-conditioning lines -1-
and -2-
at the condenser.
- 9.1 Loosen and unscrew screws -3- using > VAS 6928 - socket wrench set, 39-piece .
Air-conditioning lines on radiator (shown without front apron)
WARNING: Working with ATF- Possible danger of injury or damage (e.g. swollen hoses, skin irritation, danger of slipping, etc.)
→ Before lines are opened, place a cloth underneath them!
→ Components that come into contact with ATF must be cleaned IMMEDIATELY with water!
→ Take appropriate protective measures (protective clothing, safety goggles, oil binding material)
→ Collect emerging ATF!
WARNING: Hot fluid- Danger of scalding
→ Let the fluid cool down.
→ Wear personal protective gear.
Information
- Open connections and lines must be closed off using suitable stoppers or caps.
- Loosen ATF lines at the ATF cooler.
> 386219 REMOVING AND INSTALLING LINE FOR ATF COOLING
- 10.1 Unscrew screw and disconnect lines.
- 10.2 Collect emerging oil.
- Remove exhaust system.
- Remove rear cardan shaft.
- Loosen moulded hose -1-
at the bottom on both sides of the charge-air cooler.
- 13.1 Loosen screw-type clamp -bottom arrow - and pull off pressure hose.
Moulded hose from turbocharger to charge-air cooler
- Drain coolant.