Re posting to my touring people to see if anyone here can shed some light:
01' 528 Touring Sport Edition.
Driving in some frigid temperatures (0 degrees F) last Friday. Car started, warmed up fine. Highway driving for 45 minutes, sat out in the cold for 60 minutes, then back onto the highway for another 45-50 minutes of driving. No issues.
Pulled into a shopping center, put car in park and switched off. Got out, went to use keyless lock and noticed it didn't work. Tried key in driver's door lock cylinder, no central locking. Back in car, tried again with center console switch for locking. Then got freaked out and tried to turn the car on. Turned to position 3 in the ignition, idiot lights came up on dash, but no turnover.
Paused for about 30 seconds, thinking perhaps it's that the original battery in my key has given up after 17 years. Nope. Repeated ignition cycle and car fired up fine.
However, I am missing the ability to do several things.
Here's what I know works:
Radio
Tachometer
Speedometer
Steering Wheel controls
Steering Column Adjustment
Driver's seat electronic adjustment
Driver's side mirror adjustment
Headlights, Highbeams, Fogs
Cigarette Lighter
And the car drives as it did previous to this. Starts up like a champ, transmission behaves appropriately.
Here is what I know doesn't work:
Central Locking
Interior Lights
HVAC
Center console lights for HVAC
Passenger seat electronic adjustment
Air suspension (idiot light shows on dashboard)
I figured fuses might have somehow been blown, checked these for the systems I know aren't working and they are all fine.
Wondered if my alternator was bad, or I had somehow lost my serpentine belt, but this was not the case.
I also checked grounding points under the hood as well as at the back of the car, as well as battery terminal connections. All were snug.
I wondered if severe windchill with cold weather had fried something or locked something up. Waited until temps came back up into the 30-40s to go back out and tinker a bit. Removed negative battery terminal after letting computer go to sleep. Reattached this evening but to no avail. Battery itself was replaced last year and had a fresh "born-on" date, and has been working this winter up until last week, so I don't think that is the issue, especially as I have enough juice to start the car.
I'm wondering where/what to look into next. I ran the car for a bit tonight to get it warmed up and see if my wish that disconnecting the battery would help scare off the gremlins, but to no avail.Also hooked up the Peake code reader to see if any crazy codes were being thrown, but that was not the case.
Hoping some of you can tell me where I ought to look next or if anyone is around in NE Ohio and willing to help with some diagnosis, please let me know. I'm not so great with electrical gremlins so I'm relying on groupthink to problem solve this one!
Thanks in advance for all the help, I'll try to answer any questions you all have that can shed some light on this as they come.
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