Hi,

l am just wondering if anybody can help me, l have a p reg Renault laguna 2.0 rt and l have just changed the radio unit and l have lost the central locking both ways from via the key fob and the door lock and the fan now runs after the engine is off plus now since l left the car for a week the battery went nearly dead and now l cannot start the car as l think the immobliser has now locked the system??? Can anybody help please??

Thank you for your time, if you need any info please ask

Thank you in advance

Mark c

if the flat battery has lost the memory for the central locking module. The change of radio also can interrupt your wiring and memory functions. The fan would cut in if the car is overheating. All this is a trip to friendly garage man to fathom out, if you take it to Renault they will charge you Arm& leg to put it right.

Good luck

Have u tried putting the original radio back in to see if the fault is still there?
That would be my first choice of fix.

It sounds as though the ''new'' radio is not wired exactly the same as the ''old'' one. At least one wire is crossing over to somewhere it should not & screwing up all the other electrics.

Did u use an adaptor when fitting the radio, or did u simply cut wires & splice them together? If u cut & spliced then I'd hesitate a guess that you've ballzed it up somewhere. Put it back to how it was, buy an adaptor & try again.

Failing all that, get an auto-electrician out to sort it, but do not expect it to be cheap.