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Ross, Diagnostic and repair technician
Category: Car
Satisfied Customers: 1190
Experience:  Licensed diagnostic and repair technician
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Renault scenic replaced battery, now parking break fault showing!

Customer Question

Renault scenic replaced battery, now parking break fault showing! Any ideas please??
Submitted: 4 years ago.
Category: Car
Expert:  Ross replied 4 years ago.
Ross :

Hello and thanks for trusting me to help you today. I am a licensed diagnostic and repair technician, I look forward to working with you.

JACUSTOMER-83equug7- : Hi Ross any ideas
Ross :

As this was as a result of the battery being replaced I think its safe to say the fault is not actually with the parking brake. I think one of two things have happened, either the control unit for the parking brake has suffered for a bit of a glitch as the battery was reconnected (this is common due to the voltage spike that can occur) Or worst case, its caused internal damage to the control unit, this tends to happen if the battery terminal is not connected in one hit, and is touched on and off several times.

Ross :

Naturally being all electronic your are limited to what you can do without plugging it into a diagnostic system to see whats going on, but if there is a glitch, it may be cured by re-setting the control units, however it may need calibrating if its lost its memory which again needs to be plugged in to do.

To reset the control unit your self, simply disconnect the negative terminal of the battery for 5 mins then reconnect the battery. This will do a basic reset and often will cure a lot of random problems like this.

JACUSTOMER-83equug7- : The cooling fan staying on too does this mean anything
Ross :

That would point to a problem with a control unit, I would try to reset everything as i mentioned above to see what happens then, if its not returned back to normal i suspect it may have damaged the ECU

Expert:  Ross replied 4 years ago.
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