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Mike, Technician
Category: Jeep
Satisfied Customers: 39198
Experience:  Tech Expert
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Hi. I have a 1999 Grand Cherokee WJ and am totally confused.

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Hi. I have a 1999 Grand Cherokee WJ and am totally confused. There is an intermitent fault where the instrument's in the instrument panel stop working and the electric windows and left door mirror electrics pack up. If I switch off the engine for a couple of minutes everything works again. The fault is usually preceded by a warning "beep"
By the way, when the instrument's stop working, all of the warning lights come onRegards, XXXXX XXXXX

I'm Shantal and I'm a moderator for this topic.

We have been working with the Experts to try to help you with your question. Sometimes it may take a bit of time to find the right fit.

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Please let me know if you wish to continue waiting or if you would like for us to close your question?

Thank you,

Hello and Welcome..

My name is XXXXX XXXXX Im happy to help you ..

Can you tell me first exactly what has been done / checked so far ---?

Plus - has anything been done at the vehicle prior to this occurring?

Rgds, MIKE.....................................
Customer: replied 3 years ago.

Hi Mike,

I have just got this vehicle and as far as I know, nothing has been done.

I have been told that it could be the ignition relay. (I dont know what you call it in the States!)

Regards, XXXXX XXXXX Mike.

Hello again - Mike.....

Thank you for your reply and further info.. I am in the UK by the way ;)

Ok with this issue as you describe - first you need to be 100% sure that the basics are covered - so , first check / clean the terminals on the battery and inside the terminal clamps to be surethey are connecting as they should - if they have a bad connection - they can / will cause such erratics in the electrics....

Then check all the cables going to and from the starter to the battery and to the alternator for loose connections or corrosion the neg cable / main earth - to the body - and the body to trans / engine connection / lead.

If no faults are found / if this doesn't cure your problem, then I strongly suspect you may have a problem with the body control module...or, the dash cluster ( the electrics run through the cluster and as that is a computer in itself - it can cause all manner of "odd" situations - inc as you outline )
Check the actual block connectors to the back of the cluster - and to the BCM... but if you dont find any corrosion etc - then you really are then at the stage where you will need garage help -this is because they have the necessary equipment needed to test the electronics of the ash cluster and the Bcm to trace the fault down .

So thats the way to work this one Mike - Im sorry there is no " it wil be this / that " answer to this one - I have outlined the way through it in the most likely order for you..

Let me know if you need anything else at all -

Kind Rgds - MIKE.

...>> >> > Meantime..............Please do click on the "OK/ Excellent ratings" for me as that's how Im credited for helping you - Thank you in advance for that...

You can and are most welcome to get back to me anytime you might need - clicking the OK ratings does not close you out at all..

Rgds, MIKE.

Mike, Technician
Category: Jeep
Satisfied Customers: 39198
Experience: Tech Expert
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