Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Component Locations of Individual Control Units






Component locations of individual control units

Engine compartment







1 - Heated windscreen control unit - J505
In plenum chamber, right, next to battery






2 - Motronic control unit - J220
In electronics box, plenum chamber






3 - Transmission Control Module (TCM) - J217
In electronics box, plenum chamber






4 - ABS with EDL control unit - J104
In engine compartment, on hydraulic unit, front left






5 - Multitronic control unit - J217
In gearbox






6 - Radiator fan control unit - J293
On front end, at radiator fan