2003 Z4 E85 3.0i
So my car has been fine with the occasional use for years, I use a Noco Genius 10 Maintenance charger thing to keep the battery in shape and never had an issue in the last 2+ years.
Went to use the car today and whilst it started perfectly fine and the remote worked as expected, I immediately noticed some weird stuff going on!! Firstly, the instrument cluster is dead, does nothing, no lights etc. I checked all Instrument cluster fuses and they are all perfectly fine, I also tested the cluster pins and power at least is indeed getting there as expected. No, when I turned the ignition ON, the hazards come on, or rather, both side indicators flash even though the hazard switch is OFF. When I turn the ignition OFF, the FRONT RIGHT (Drivers Side) indicator is on permanently/solid (not flashing!), but no other indicator light is on. The side roundel is OFF, and the rear is OFF, it's ONLY the front drivers side indicator that remains on. If I turn ignition back on, the hazards start up again. Tried toggling the hazard switch but makes no difference other than the switch triangle hazard symbol flashing as expected when the switch is on and stops when switch is off, but the indicators themselves all still flash. Again vehicle starts and runs fine.
I then tried a few diagnostic tools -- Carly, Creator C310+, ISTA/D, XDiag Pro, basically all had the same issue -- no comms with almost everything. Almost everything gets listed as "Not Equipped". Only 3/4 modules return anything, but I'm feeling that the issues it flags are most likely due to whatever this issue is! I'm guessing it's something CAN-BUS / K-Bus related...
I've tried swapping with a new battery but made no difference, I've also removed battery for 30mins, then fitted a new one, made no difference.
Does ANYONE have any ideas?
Many thanks in advance
So my car has been fine with the occasional use for years, I use a Noco Genius 10 Maintenance charger thing to keep the battery in shape and never had an issue in the last 2+ years.
Went to use the car today and whilst it started perfectly fine and the remote worked as expected, I immediately noticed some weird stuff going on!! Firstly, the instrument cluster is dead, does nothing, no lights etc. I checked all Instrument cluster fuses and they are all perfectly fine, I also tested the cluster pins and power at least is indeed getting there as expected. No, when I turned the ignition ON, the hazards come on, or rather, both side indicators flash even though the hazard switch is OFF. When I turn the ignition OFF, the FRONT RIGHT (Drivers Side) indicator is on permanently/solid (not flashing!), but no other indicator light is on. The side roundel is OFF, and the rear is OFF, it's ONLY the front drivers side indicator that remains on. If I turn ignition back on, the hazards start up again. Tried toggling the hazard switch but makes no difference other than the switch triangle hazard symbol flashing as expected when the switch is on and stops when switch is off, but the indicators themselves all still flash. Again vehicle starts and runs fine.
I then tried a few diagnostic tools -- Carly, Creator C310+, ISTA/D, XDiag Pro, basically all had the same issue -- no comms with almost everything. Almost everything gets listed as "Not Equipped". Only 3/4 modules return anything, but I'm feeling that the issues it flags are most likely due to whatever this issue is! I'm guessing it's something CAN-BUS / K-Bus related...
I've tried swapping with a new battery but made no difference, I've also removed battery for 30mins, then fitted a new one, made no difference.
Does ANYONE have any ideas?
Many thanks in advance