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post #7 of (permalink) Old 27th January 2012
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Re: Renault Laguna 1 - Passenger Door Won't Open

take the UCH off and get it washed in Isoproponal acohol or pcb cleaner, dry it off, then refit.
make sure the handle is in and try again.

it can either be the electronic lock mechanism (thats jammed in deadlock mode) or the UCH is playing up due to damp/water getting into the PCB and shorting out the power relays by mixing with any dust that has accumilated over the years inside it on the PCB.

checking the PCB solder joints are all good is also a good idea, as they might have fractured due to vibration.
RE-Solder the relay pins and edge conectors just to make sure.
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