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Old 31-08-2019   #1
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Question remote locking/alarm problem??

Hi guys,
Anyone got any ideas...
the remote locking/alarm setting has suddenly stopped working on my multi (2005 'new nosejob' Eleganza.)
Was working OK, (both fobs) then started playing up. Thought it was the fob battery (only use one fob, other is my 'spare') changed battery but no difference, and, using the spare key made no difference either.
Changed batteries in both remotes, and still nothing??
No work has been done on the car, and nothing has changed, so at a bit of a loose end now?
Any advice would be much appreciated. (have tried the 'powering down' ie battery disconnect, but again, no joy)
Unlikely that both remotes would 'pack up' together surely??
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Old 02-09-2019   #2
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Re: remote locking/alarm problem??

This sounds like a simple connection problem - that's a misnomer if there ever was one!
Simply put, could be a power to system loss . . .
OK, you've done the obvious - changed the batteries in the fobs.
Have you tried operating the door locks by pressing the individual buttons down?
Do they all respond?
If yes: circuit to all locks is sound so look for problem starting at receiver unit
Make sure there is power to the unit
Let us know how you get on
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Last edited by Oletimer; 02-09-2019 at 00:35. Reason: addendum
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Old 02-09-2019   #3
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Re: remote locking/alarm problem??

I think fuse F18 is the one for the central locking. IIRC the central locking is the only thing on that fuse, so there's no quick test of a light switch or similar as a tell-tale. The fuse is located in the main interior tray under the floor of the glovebox in front of the driver.

If the fuse checks out OK, there's some more heavy-duty advice on the invaluable Multipla Owners site:
https://sites.google.com/site/fiatmultipla/Home/repairs
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Old 02-09-2019   #4
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Re: remote locking/alarm problem??

Quote Originally Posted by Oletimer View Post
This sounds like a simple connection problem - that's a misnomer if there ever was one!
Simply put, could be a power to system loss . . .
OK, you've done the obvious - changed the batteries in the fobs.
Have you tried operating the door locks by pressing the individual buttons down?
Do they all respond?
If yes: circuit to all locks is sound so look for problem starting at receiver unit
Make sure there is power to the unit
Let us know how you get on
Hi Oletimer,
Yes, the central locking works fine with the key, and also if you press either the driver or passengers button on the door, all 4 doors lock/unlock (doesn't do so with the rear buttons, think this is correct), possibly a receiver problem?
Not sure where that's located though.
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Old 02-09-2019   #5
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Re: remote locking/alarm problem??

Quote Originally Posted by widemouthfrog View Post
I think fuse F18 is the one for the central locking. IIRC the central locking is the only thing on that fuse, so there's no quick test of a light switch or similar as a tell-tale. The fuse is located in the main interior tray under the floor of the glovebox in front of the driver.

If the fuse checks out OK, there's some more heavy-duty advice on the invaluable Multipla Owners site:
https://sites.google.com/site/fiatmultipla/Home/repairs
Hi W.M.F,
Fuse 18 on my multi does the front windows, nothing else. (according to the manual) and have tested by removing fuse, and it does only the front electric windows.
According to the manual, there is no fuse for the central locking at all?? (bit strange I thought) but as central locking works via the keys in the lock, and the door buttons, it appears that the remote receiver may have packed up.
Just need to find the little monster, and then try checking whether there is power there or not. Can't think of anything else to check though.

PS, have the 'home repairs' site bookmarked, been useful, but not this time, sadly.......
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Last edited by HughJarsse; 02-09-2019 at 20:42.
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Old 02-09-2019   #6
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Re: remote locking/alarm problem??

@HughJarsse - I've just had a look in my handbook, which is for a 2004 roundnose, so things may well be different for your squarenose. Like yours, it doesn't list 'Central locking' as such so I'm not sure why I had F18 in my head. Apologies. However, it does list:

Anti-theft warning light (does a Multi really need one of those?? ) - Fuse 14 (10Amp)

Anti-theft control unit - Fuse 14 (ditto)


Anti-theft receiver - Fuse 12 (10 Amp)

Remote control receiver - Fuse 12 (ditto)
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Old 02-09-2019   #7
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Re: remote locking/alarm problem??

Hi W.M.F,
Did try 14, (that also says it covers the 'hazard light power' but hazards were working. pulled 14 and hazards wont work, replace, they work, but no joy with the remotes sadly.
As for 12, that also controls a few other things as well, (instrument panel, interior lights, clock, EOBD tester, sound system) all of which work, but when 12 pulled, they done. replaced, everything but the remotes work again, (though it does state +30 by most of those items, which I assume means a separate 30amp fuse somewhere else in the line perhaps?)
Might have to start 'grovelling about' under the dashboard, to see if there is any signs of a receiver box, etc to check.
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Old 02-09-2019   #8
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Re: remote locking/alarm problem??

Then, as they say on Dragon's Den, "That's me out" , I'm afraid.

Best of luck!
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Old 03-09-2019   #9
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Re: remote locking/alarm problem??

@HughJarsse
Does the little red LED illuminate on the fob when you press the button? These micro switches are notoriously rubbish on these fobs. There was a user on here offering a repair and return service.
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Old 03-09-2019   #10
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Re: remote locking/alarm problem??

Quote Originally Posted by shedenvy View Post
@HughJarsse
Does the little red LED illuminate on the fob when you press the button? These micro switches are notoriously rubbish on these fobs. There was a user on here offering a repair and return service.
Hi Shedenvy,
strangely enough those little red leds have never lit up, even when the remotes were working, so not sure whats happened there.
RE the microswitches, both remotes have had their switches replaced recently, as they were getting harder and harder to get to operate. So they 'should' both be OK (strange that they should both stop working together if it is the switches)
The guy you mentioned on here was ages ago, and he hasn't replied to three messages to him, so found an online place that charged me 25 for a replacement switch;
https://www.remotekeyrepairs.com/pro...epair-service/
Just seems strange to me that both remotes just stopped working after playing up for a couple of days or so though??
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Old 03-09-2019   #11
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Re: remote locking/alarm problem??

Darn, sorry about that. I remember buying the microswitches to solder on myself but in swapping and changing / cleaning and reassembling both fobs, at least 1 started working. Never really understood why.
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Old 04-09-2019   #12
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Re: remote locking/alarm problem??

Quote Originally Posted by shedenvy View Post
@HughJarsse
Does the little red LED illuminate on the fob when you press the button? These micro switches are notoriously rubbish on these fobs. There was a user on here offering a repair and return service.
Hi Shedenvy, re the key repairer:

Think the guy you are talking about was 'jonhyfrommars' but as mentioned, not responded to messages, and has not been onsite since about 2016 sadly, so assume he has departed for pastures new....
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Old 04-09-2019   #13
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Re: remote locking/alarm problem??

Have you tried in different places? Sometimes a high radio frequency can erase the signal from the key.
Get away for a few kilometers and try again
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Old 06-09-2019   #14
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Re: remote locking/alarm problem??

First thing you must do is check to that the remote is sending or not sending a signal. If you don't do that, you could be running around in circles for ever.
Just go and see a decent autolocksmith and have him check for a signal.
We don't charge for this check but I think your a little too far from us on the Essex Riviera.
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Old 06-09-2019   #15
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Re: remote locking/alarm problem??

Quote Originally Posted by Txuchin View Post
Have you tried in different places? Sometimes a high radio frequency can erase the signal from the key.
Get away for a few kilometers and try again
Hi Txuchin,
Tried that today, (live in Bournemouth, and travelled to Exeter today, so took both remotes with me, and tried at various points along the way and back, Dorchester, Bridport, and Honiton, as well as Exeter itself, but no joy, sadly..
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