[Kim]

I took the white car out of storage on Monday due to some observed mould growth on the carpets and leather seats. Got it all cleaned up ok and started driving it. Since then I have had some electrical things that might simply be coincidental but maybe not.

1. On Tuesday, first day driving to work, the cruise control gave one hitch and then stopped working, Has not worked since, even intermittently. Fuse is OK.
2. A/C will not work, worked when put away 3 months ago, fitting was replaced just before storage so maybe this has leaked.
3. Today, while driving, airbag light came on. When car is shut off the light goes through the check routine, stays off for about 2 seconds and then comes back on.
4. Left rear signal light is acting up but this seems to be a bulb/wire issue right at the rear lens area.

Is there any common ground wire associated with any of these components? Seems odd that this has all happened shortly after storage. Haven driven car about 2000 km since Monday.

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[flash]

the airbag light is often voltage related - too low and it will trigger it easily - this happen a lot with stored cars

how's the battery's specific gravity?

what does the voltmeter in the car read?

the other things could be relay related

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[Kim]

Battery was on a Porsche battery tender the entire time. Voltage on first starting was the same as last time I drove it. Very certain that there are no issues with the battery. Also note that the airbag light came on only today, after 2000 km, and while I was driving at 100 km/h. In daylight with A/C off (sadly).

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[flash]

what do you mean the voltage was the same as the last time you drove it? did you check the voltage before starting the car?

the alternator puts out voltage that is read at the gauge - however, with the key on, but not starting the car, you can read the voltage of the battery, without interference from the alternator

i think you need to check the specific gravity of the battery - battery tenders, like any charger, can provide a false charge, higher when you first disconnect it from the battery, buy shortly thereafter the battery will show weak

the airbag light could indeed be a main ground though, and that is worth checking

it could be a series of grounds, but i tend to doubt it - more than likely you have a couple of problems going on, and i would still look for the common thread, like the fuse block which holds the relays - bad connections can easily be formed if a car sits somewhere where it can get humid or damp

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