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Ford mondeo mk4 lost communication with TCM and BCM

kje
kje
in Ford Mondeo / Vignale Club

Featured Replies

Ford Mondeo Mk4 Automatic 2008 - Fault Codes

U0101 Lost communication with TCM

U0140 Lost communication with Body control module according to PCMSCAN:

20231116_131837.thumb.jpg.84bf4aca98ce19d22e16e217da2390f1.jpg

The gear lever is completely stuck in P and no light on the gear letter. The problem arose after I couldn't start the car and had to "jump start". The battery is bad but after charging I can start the car, but not put it in gear.

Tried swapping relay R7 to R6 as in this YouTube video with no luck. What is the next thing I can check?

  • Quote


    Get the battery voltage good first

    I'm not sure if this age of Mondeo suffers with the instrument cluster solder issue like the Focus of that period

    Use FORScan, if that system you have won't do it, and reset PCM TCM and BCM AFTER battery is full voltage

  • Quote

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