RD4 Radio

[tomc71]

Thanks, I'll take the radio win for today and focus back on horn and central locking tomorrow, you never know, some waggling around of connectors into the coms unit might prove fruitful as lexia is telling me there is dialogue but is showing a question mark in the fault column. I'll update then, Tom

[GiveMeABreak]

So it is possible that the fob may have been replaced with an aftermarket one that isn't firing on all thrusters.

[tomc71]

So it is possible that the fob may have been replaced with an aftermarket one that isn't firing on all thrusters.

I had it checked by a locksmith after changing the battery, he said it's putting out good power.

[GiveMeABreak]

It's not the power that's the issue Tom, it's the correct frequency and protocols that are different depending on what fob is correct for the vehicle.

[tomc71]

Thanks Mark, a difficult one to check, I'm using the correct 2 button flip-key remote which is accepted by Lexia as part of the key programming function, I appreciate this is only checking that; 1) the key is cut correctly and 2) The transponder (RFID) chip is correct but given that I also found an old remote PCB taped around the ignition barrel I would not be surprised, (FYI this has now been removed and the flip key re-programmed by Lexia and now functional but the ignition-hold lock for 5 seconds etc function still having no impact on remote locking/unlocking).

I have focused on the horn, (I could see it responding on the Lexia actuator test) so assumed it was the horn itself as I could hear the relay clicking in the engine fuse box, when I went to check it I could not find it, after removing nearside headlight, front bumper and nearside front wheel liner I was getting very confused, I eventually found two cut wires in a nearby loom, on putting a voltmeter to the wires, found they were on a permanent 12v. I presume the relay had got stuck on and someone had simply cut the entire horn and feeder wires out. I've ordered a second hand BSM from Ebay, (£35) as mine also had melting around the internal blower fuse (!!!) so will await to see if that helps with the central locking at all. (unlikely but you never know). Incidentally, I didn't know relays could be stuck on and still click?

Will update on progress... this is my first ever French car since owning a Renault 5 in the early 90's, I'm astounded by the sheer number of electrical issues, is this normal??

Thanks,

Tom

[GiveMeABreak]

Sounds like Mr bodgit and leggit has been let loose in the past, so no telling what damage has been caused....