Transmission Cooler: Service and Repair

17 22 010 - Removing and installing/replacing heat exchanger for automatic transmission (N54)





Important!
Danger of scalding!
Only perform this work after engine has cooled down.





Necessary preliminary tasks:
- Drain coolant Service and Repair
- Remove underbody protection Removing and Installing/Replacing Front Underbody Protection





Recycling
Catch and dispose of drained coolant in a suitable container.
Transmission fluid emerges when oil lines are detached from heat exchanger.
Catch and dispose of escaping transmission fluid in a suitable container.
Observe country-specific waste-disposal regulations.





Release and disconnect coolant hoses (1).
Unlock transmission fluid lines (2) and detach.
Release screw (3).
Tightening torque 17 11 4AZ 17 10 Radiator, Expansion Tank.
Remove heat exchanger (4).





Note:
Assemble engine.
Check fluid level Service and Repair in automatic transmission. If necessary, top up transmission fluid.