Intermittent overhead display - revisited
thought I had sussed, and cured, the BCM problem on my 2002 Jeep Grand Cherokee 2.7 CRD Ltd Auto, but it seems not.
I now carry a small 13mm ring spanner in the car with which to disconnect the battery and reset the BCM.
The fault is not consistent though. Sometimes she'll go 3 or 4 days without dropping out, other times I will reset it of an evening and it drops out the next morning.
One thing I have noticed though, when you switch on the ignition you get 5 beeps as the various indicator lights go out, start the engine and you get another 5 beeps, sometimes! Sometimes it does 4, and occasionally only 1. It is almost always when it does only 1 beep that the BCM malfunctions shortly (within 20 yards of home) afterwards.
I've also noticed that, even when all appears to be O.K., giving her a bit of wellie can cause it to drop out. I don't think it's down to a battery/charging problem as I've checked the battery on load (9.6V on start-up) and charging (14.4V).
Does anybody know how many beeps I should get before, and after, starting the engine? What do these beeps signify?
Next time it only does 1 beep I'm going to try switching off and re-starting it to see if it makes any difference.
Chrysler sucks, agricultural mechanics controlled by over-sophisticated unreliable electronics. Does anybody know where I can get a good old Model 'T', preferably in black?