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2000 xj8. I was repairing the brake pedal switch soldering the board but I let the solder run to two wires didn’t notice it anyway reinstalled the switch so started the car took it for a drive all work well for a few miles the dash lit up like a Christmas tree. Then got car back home now I have Electric fault and Suspension fault took out switch again repaired my mistake but still have electrical fault and suspension fault did a hard reset over night still same problem did I cook the ECU if so I have another one from same year same model can I just swap it out or do I need to send the original one for repair thank you jrb53 car runs great but still have faults
Last edited by jrb53; 01-29-2023 at 10:02 AM.
Reason: Forgot to add car still runs great
Start with the basics; check relevant fuses, switch operation, ensure low battery isn't in play, etc. Sounds more like a CAN bus disruption than "cooked ECU", you may just have a module offline causing the disruption resulting in all those fault messages.
Yes, I believe my first move would be to get a known good brake switch.
Then see what if any faults remain. It is good to rule out the original
offender before pursuing wild ornithoids.
I agree with the above advice. New brake switch. Be sure to do a hard reset. Unhook the negative battery cable, remove the old switch, install the new switch, reconnect the cable.