P68.10-2504-06
1 Shift selector lever on P and switch off ignition .
2 Remove cover below instrument panel.
Unscrew screws (1) to do this. Pull cover (2) down in direction of arrows and remove. Unscrew bolts (3). Remove cover (4).
Installation: Ensure that cover (4) is seated correctly on air duct.
Only with code ET2: TELE AID car telephone emergency call system.
Disconnect connector from right front emergency loudspeaker.
P68.10-2731-01
3 Open passenger door and unclip cover (5).
For easier access to charge air cooling control module (N90).
N90 Charge air cooling control module
P54.21-2186-01
P54.21-2187-11
4 Unplug charge air control control module (N90) from base.
P54.21-2273-01
5 Bridge pin 2 and pin 5 at base.
Check that the correct pins are bridged. PIN numbering at base does not correspond to the PIN numbering at control module of charge air cooling (N90).
Bridging actuates charge air cooling circulation pump (M44).
6 Open cap at coolant expansion reservoir.
Check coolant level and correct if necessary.
7 Switch on ignition.
The charge air cooling circulation pump (M44) bleeds the charge air cooling system.
8 Let charge air cooling circulation pump (M44) run for as long as necessary, until no more bubbles rise.
9 Switch off ignition.
10 Install in the reverse order.