Quote:
Originally Posted by Helmsman
Joe, had a good run today, the EDC's definitely doesn't change, chassie is bone hard. The servo is changing but the difference between the settings seem somewhat less than before, might be placebo.
Front connections seems fine, will have a go at the rear during the weekend.
Doesn't seem to be any fuses for the EDC which I find strange.
Totally agree on the lack of fault code. Will confuse the dealer, take time and potentially make them start dig in the wrong corner, bummer... However guess I'll have to contact them next week.
Cheers
|
Helmsman, diagrams above show no circuitry is shared between EDC and Servo, (except tapping to PT-can bus for connecting to DME). There is no good reason for both systems to go out at the same time. I wouldn't expect for you to have both issues too. My guess is that some electrostatic discharge could have zapped them both. The EDC-K box located in the trunk is probably insufficiently shielded in bmw's design. Static electricity will occur commonly when someone places luggage or clothings in the trunk (especially in winter) and charges will run straight through the least resistant path to ground which may well be through the EDC box and its tie to chassis ground. Having comfort access means those charges don't get a chance to discharge by touching the body of the car or a key lock.
Electronics they put in cars these day uses microchips that are extremely vulnerable to ESD and BMW does not go through sufficient efforts to shield those modules. If this was the electronic for an airborne system it would not even pass a first stage pre-design review visual inspection.