Dreaded failure has hit me too. After working perfectly, the drivers side stopped working. I have taken off the glass, cleaned the contacts, crimped the wire with no joy. Switched the passenger one for the drivers and proved the glass is working. Put them both back on and now neither work.
Need a bit more time to do some exploratory work; though I won't be investing too much time as it isn't the end of the world to have non-heated glass.
Thanks Steve, I will give it a try happily.
The only constant is that the drivers side has remained inactive since it stopped working. The glass itself came to life when swapped to the passenger side, but doesn't work when back in its proper location. Bizarre that the passenger one has stopped since replacing; unless I dislodged a connection, but don't believe this to be the case.
If I disconnect the battery, will I need the radio code or need to sync the keys at all?
Cheers,
DC
Just tried and I am back to as was; passenger side working again, drivers side not. Damn shame when these little niggles creep in.
Good idea though Steve.
One gadget I don't have ironically. I will either purchase one or borrow my dads. I'd prefer to avoid having to remove the door card too; although not overly challenging, there is always a risk that things will break.
Nothing to break there, I removed it on my driver side 15 times, 3 screws and plastic plugs, just dont pull it too far from the door before you snap the tweeter out.
I couldn't fix the mirror heating on driver side, I gave up.
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If there is a relay, it is an integral part of the control module, probably an electronic relay instead of an electro-mechanical relay.
If the relay function exist in the door control module and it is controlled by a can bus signal, there bust also be a 12V feed to the relay. That feed is either a common feed to other consumers in the door such as lock, window etc. or an exclusive feed to mirror heating. Either way it must have a fuse.