S60 Electrics: - Remote locking not working

reggit · Oct 11th, 2012, 14:32

OK, this is an interesting one.

Firstly there are no fault codes logged on Vida and there definately isn't an interfering radio signal.

When I bought the car, it came with a key and a non-functioning remote.
New battery and the remote transmitted but wasn't recognised by the car - OK, so it could have been an ebay replacement to make the car look more complete.

I bought a brand new remote, with code etc and have just attempted to have it programmed into the car. Although the car took the software and now shows 2 remotes are programmed to it, the car still doesn't respond.

Could there be a fault in the UEM (I believe this is where the signal is picked up) that isn't reported by the diagnostics, does the remote receiver have a remote or external (to the UEM) aerial to pick up the remote signals?

reggit · Oct 11th, 2012, 22:04

Took it apart, the receiver part of the UEM appears to be on a little daughter board with the antenna part of the PCB.

Can't see anything amiss, so am confused. The only thing I can think of - if I assume the UEM is good - is that the control I got with the car isn't the original one, and my new one, which wasn't sealed ended up in the wrong packet with an unrelated serial number - it does seem a little too odd though that both controls could be incorrect for the car/packaging.

Is there anyway of checking that the unit is receiving a signal? The only thing I can see in vida is if it has decoded the signal as been valid for the car, that will be further up the functionality chain.

The car is a 2002 so has the seperate fobs rather than one built into the key.

itguy · Oct 11th, 2012, 22:16

I think there are different frequency fobs available. I recently had a new one from Volvo and wen they tried to code it they said it was the wrong one. Got a different fob in the afternoon and all worked hunky dory.

reggit · Oct 11th, 2012, 22:27

Thanks for that, it was one of the 1st things I checked. Both the units I have are tuned to the EU frequency band of 433.92MHz.

reggit · Nov 27th, 2012, 10:55

Thought I'd update this:

Following the previous posts, I also noticed that the auto-dimming mirror wasn't working as well - pointing the finger of suspicion directly at the UEM.

I've just had a software re-load done, cost about £80 at Volvo in Blackburn, which has fixed it - My original remote still doesn't work so I assume that is alien to the car, but the new one does and the mirror has started to dim as well.

Overall a good result

Oct 11th, 2012, 14:32	#1
reggit Premier Member Last Online: Today 08:25 Join Date: Feb 2012 Location: Preston	Remote locking not working OK, this is an interesting one. Firstly there are no fault codes logged on Vida and there definately isn't an interfering radio signal. When I bought the car, it came with a key and a non-functioning remote. New battery and the remote transmitted but wasn't recognised by the car - OK, so it could have been an ebay replacement to make the car look more complete. I bought a brand new remote, with code etc and have just attempted to have it programmed into the car. Although the car took the software and now shows 2 remotes are programmed to it, the car still doesn't respond. Could there be a fault in the UEM (I believe this is where the signal is picked up) that isn't reported by the diagnostics, does the remote receiver have a remote or external (to the UEM) aerial to pick up the remote signals? __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles Last edited by reggit; Oct 11th, 2012 at 14:37.

Oct 11th, 2012, 22:04	#2
reggit Premier Member Last Online: Today 08:25 Join Date: Feb 2012 Location: Preston	Took it apart, the receiver part of the UEM appears to be on a little daughter board with the antenna part of the PCB. Can't see anything amiss, so am confused. The only thing I can think of - if I assume the UEM is good - is that the control I got with the car isn't the original one, and my new one, which wasn't sealed ended up in the wrong packet with an unrelated serial number - it does seem a little too odd though that both controls could be incorrect for the car/packaging. Is there anyway of checking that the unit is receiving a signal? The only thing I can see in vida is if it has decoded the signal as been valid for the car, that will be further up the functionality chain. The car is a 2002 so has the seperate fobs rather than one built into the key. __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles

Oct 11th, 2012, 22:27	#4
reggit Premier Member Last Online: Today 08:25 Join Date: Feb 2012 Location: Preston	Thanks for that, it was one of the 1st things I checked. Both the units I have are tuned to the EU frequency band of 433.92MHz. __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles

Nov 27th, 2012, 10:55	#5
reggit Premier Member Last Online: Today 08:25 Join Date: Feb 2012 Location: Preston	Thought I'd update this: Following the previous posts, I also noticed that the auto-dimming mirror wasn't working as well - pointing the finger of suspicion directly at the UEM. I've just had a software re-load done, cost about £80 at Volvo in Blackburn, which has fixed it - My original remote still doesn't work so I assume that is alien to the car, but the new one does and the mirror has started to dim as well. Overall a good result __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles

Oct 11th, 2012, 22:16	#3
itguy Senior Member Last Online: Dec 25th, 2023 07:01 Join Date: Mar 2007 Location: Melton Mowbray	I think there are different frequency fobs available. I recently had a new one from Volvo and wen they tried to code it they said it was the wrong one. Got a different fob in the afternoon and all worked hunky dory.

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