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Old 01-20-2019, 10:21 AM
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Join Date: Jan 2019
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Default E70 problem after changing FRM3 module

Good afternoon,

My FRM3 modules is probably faulty after a major electronics error: they tried to jumpstart the engine with the polarity of the cables reversed. It throws a lot of errors:

- power window cluster lin bus failure
- dimmer potentiometer failure
- front door contacts failure
- rear door contacts failure

So I bought a replacement (second hand) FRM3 E70 AHL module, and changed the VIN number to the VIN number of the car. I also copied the VO from the CAS to the FRM module.

After that I tried to program and code it with ISTA-P, and the error in the attachment showed up (Unexpected control modules in the vehicle).

This can mean that the old VO is still somewhere present on the FRM, but when I read the VO with NCS-expert, it reads exactly the same as the CAS-unit.

Programming and coding is possible with WINKFP and NCSEXPERT but not with ISTA-P. At the moment the 'new' FMR3 module throws the same errors as the old one, which is very strange.

There are now two options which can be the case:
- The FRM module is not correctly coded
- The FRM module is allright but all the other components are faulty. I measured the dimmer failure error in detail, but the dimmer potentiometer is perfectly working.

Anyone has an idea what the next step can be?

Thanks in advance and best regards,
Hendrik
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