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#1 |
Newbie
Rover 75 Tourer Join Date: Feb 2016
Location: South Cambridgeshire
Posts: 28
Thanks: 11
Thanked 4 Times in 4 Posts
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![]() While it works fine mechanically via the door-lock - and the car starts perfectly well, there is suddenly no sign of any electrical life from my Valeo key fob, despite having tried a couple of alternative new 2032 batteries.
1 The car doesn't lock/unlock remotely using either of the key-fob buttons. 2.The sidelights no longer flash on attempting a remote lock/unlock. 3. There's no l.e.d. light on the fob itself when either lock or unlock button is pressed. However, I can't remember what's meant to happen - perhaps it only ever happened on successful interaction with the car, so should I expect this? I'm assuming that I shouldn't expect the fob-l.e.d. to light up, because I have a spare fob circuit-board from a scrap vehicle - and when I put that into my current car's fob with a new battery, that one doesn't 'flash' either when either fob button is operated. 4. The Owners' Handbook suggests that if the fob isn't arming/disarming the alarm, it may have gone out of synch. with the receiver unit in the starter switch and recommends multiple button-presses while close to the car to resynchronise. However having tried this, both with key in ignition and out, nothing happens, and in mechanical key-operating mode, the alarm system seems to function normally in that if I lock the car with the bonnet slightly open I get the usual single bleep from the horn... Any thoughts on potential remedies would be appreciated please - including recommendations on an economical source of a duplicate replacement key/fob if that's the only remedy available... Many thanks in advance for your ideas. |
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#2 |
I really should get out more.......
Rover 75 Saloon Join Date: Jul 2011
Location: Gävle
Posts: 2,575
Thanks: 395
Thanked 823 Times in 652 Posts
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![]() The key fob should light up (red light) whenever either the lock or unlock button is pressed. Sounds like either the batteries are dead (check 3v with multimeter) or the keyfob circuit boards are dead, including the one from the scrapyard.
Keyfobs can be reprogrammed with Toaf (.43) but first you have to get a working remote board. Good luck |
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#3 | |||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,604
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
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Quote:
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Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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#4 |
Gets stuck in
Rover 75 Tourer Join Date: Mar 2022
Location: Chesterfield
Posts: 728
Thanks: 206
Thanked 69 Times in 53 Posts
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![]() It might seem obvious, but is the battery in the key fob fitted correctly?
When we bought our 25, one of the key fobs didn’t work. It turned out that the battery was fitted the wrong way round. |
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#5 | |
I really should get out more.......
Rover 75 Saloon Join Date: Jul 2011
Location: Gävle
Posts: 2,575
Thanks: 395
Thanked 823 Times in 652 Posts
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Mike |
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#6 | |
Loves to post
Rover & MG less Join Date: Mar 2016
Location: ELLESMERE PORT
Posts: 322
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Thanked 97 Times in 90 Posts
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I would get in touch with Big Russ on here and seek his advice - he is the key guru . |
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#7 |
This is my second home
Rover 75 Saloon & Tourer Join Date: Sep 2012
Location: Lincoln
Posts: 14,998
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Thanked 3,032 Times in 2,181 Posts
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![]() Has the car had a flat battery and filed to start? I seem to recall in such circumstances the key can become unsynchronised from the car.
macafee2 |
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#8 | |
Gets stuck in
Rover 75 Tourer Join Date: Mar 2022
Location: Chesterfield
Posts: 728
Thanks: 206
Thanked 69 Times in 53 Posts
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![]() Quote:
https://www.the75andztclub.co.uk/for...d.php?t=106447 |
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#9 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,604
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
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![]() Quote:
I think you're probably right that Peter should check with a multimeter the batteries he's using when under load, i.e. when pressing the lock or unlock buttons. They may well show 3v open circuit but when required to deliver current that can drop dramatically. This would appear to be the most likely reason why none of the LEDs is illuminating. Regarding Dave's point about correct polarity, when fitted the battery's labelling should be uppermost and visible. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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