Quote:
Originally Posted by ekim
Hi All, I'm new to this forum. Also my XC90 is my first volvo, so I'm still getting used to the Volvo way. I have had some weird electrical problems (brake lights randomly stuck on without pedal being touched while ignition off then battery drains) that have been traced to a faulty or failing REM. I managed to solve this problem for the time being by using Vida to simply scan for errors - for some reason it seems to ... maybe reset the electronic modules, but now Ive swapped that fault for a check brake light console message. I've found the part on Ebay. Problem I have is whether this part will need to be encoded into my system. The Part number is 28017881
The Auto Electrican who diagnosed it suggested if I got a second hand replacement then it would need flashing or encoding to integrate with the system identity. That's where the dealer lights up his £££££ module , so to speak :-)
It seems to be a dark art. Is there a DIY approach, or folks who do it as a service for less than the price of a new car 
I have the impression that all electronic components in the volvo are encoded somehow. So any 2nd use replacement electronic modules would require the same. I'd welcome any thoughts and insights. |
Change the brake light relay which is plugged into the REM, there was a volvo recall many years ago where you replace the two single relays by a single one twice as wide. Or has he properly Diagnosed the REM and come to his conclusion?