Re: Check Control Issue (archive)

91 750iL 90,000 miles. I have had the vehicle into the dealer who has spent 6 hours on the car and I still have a check control issue.
Innitially they thought they found the problem being a bent pin on a connection to the instrument cluster. Fixing this bent pin did change the characteristics of the check control issue but not fix it.
The issue is the check control see owners manual comes on each time I start the car. After putting the car in gear and driving a few feet the message disapears and the screen goes dark and I am unable to bring up the phone date time etc, for about 10 minutes, after this the screen works normally, why the delay. When you push the check control button the system always reads check control okay.
Is this a low voltage problem, due to the car sitting? If I use the car within an hour it works normally, if I leave it more than an hour it takes the full 10 minutes to work again. Not a big issue but I like to stay ahead of these things any advice.
Rod

Sounds like a capacitor not holding current. Older check control systems exhibited related problems by 'gonging' after the car had been sitting etc. These were always rectified by replacing the necessary capacitors on the instrument cluster circuit board.
This is just an educated guess but worth a mention next time you are in at the shop.
BTW.......... nice to see you are trying to 'keep on top' of that beautiful car.
Cheers,
Brian P.

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