W447 door control fault

SteveCab

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Jan 25, 2022
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Your Mercedes
C Class W205 220di 2017
I have a U021500 fault as my drivers door control unit is not working. I’ve checked the 30A fuse in S4, 2 which is okay on a meter. I’m wondering if there is another fuse or common problem with these.

All advice greatly appreciated.
 


www.W140.co.uk&www.r129.co
Specialist in parts for W140 and R129 Mercedes-Benz models.
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