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Greg
Greg, Technician
Category: Renault
Satisfied Customers: 7180
Experience:  Automotive diagnostic tech
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All warning lights come on and out when car is being driven

Customer Question

All warning lights come on and out when car is being driven only for a split second renault megane
Submitted: 4 years ago.
Category: Renault
Expert:  Greg replied 4 years ago.
Name is Greg, My goal is to provide you with excellent service – if you feel you have gotten anything less, please reply back,

First check the connections on the battery ,must be clean and tight ,clean with a emery cloth on the post and inside the clamps .

This is a tricky issue to diagnose, but from experiance this has in most cases turned out to be a bad alternator , it will in most cases test out okay when checked as this is an intermittent problem .

Preventive check, and check all connections in the engine compartment , fuse box connections , engine ECM connection wiring harness for damage.

But until the problem comes and stays this will be a hard issue to check for ,but please go ahead and check all the connection you can get at.

Need further assitance with this issue then please get back to me.

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Rgds Greg