OK, stupid question. What battery do the remote fobs take? Mine are both flat, I've opened them up, one has a singe CR2032 in it, the other had a pair of CR2016s stacked in it! So that didn't help and Google hasn't really given me a definite answer.
Thanks.
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Remote fob battery
Re: Remote fob battery
Mine's got a 2032 in it. If yours had 2 2016 stacked it might have fried the electronics.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Remote fob battery
I suspect the remote with 2 batteries has been replaced at some point. When i was looking for a new remote there was a choice of single 2032 or doulble 2016.
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
Re: Remote fob battery
2 options lovely 
is there anything to differentiate the two, part numbers on the unit etc? I'll have a proper look at my keyfob collection this evening!
is there anything to differentiate the two, part numbers on the unit etc? I'll have a proper look at my keyfob collection this evening!Re: Remote fob battery
Part number on my fob is 4D0 837 231K.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Remote fob battery
Had a quick look (so I could be wrong) and I couldn't find any evidence that any Audi 3-button key fobs take stacked CR2016 batteries as standard. My money is on the DPO having put 2 2016 batteries in because they didn't have any 2032 batteries handy and didn't know any better.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Remote fob battery
Well I've just looked at this image:
https://blog.wolfautoparts.com/wp-conte ... l-6-15.jpg
and the +ve terminal of the battery holder (non pcb case) is metallic connecting to the side of the battery, so if you stack 2x CR2016s in there you will just short out and flatten the back one. So hopefully no harm done.
https://blog.wolfautoparts.com/wp-conte ... l-6-15.jpg
and the +ve terminal of the battery holder (non pcb case) is metallic connecting to the side of the battery, so if you stack 2x CR2016s in there you will just short out and flatten the back one. So hopefully no harm done.
Re: Remote fob battery
I think it's an aftermarket case or fob like this. https://www.ebay.co.uk/itm/Audi-A2-A3-A ... SwXCBaTPnUShoppinit wrote: ↑Wed Aug 14, 2019 9:44 amHad a quick look (so I could be wrong) and I couldn't find any evidence that any Audi 3-button key fobs take stacked CR2016 batteries as standard. My money is on the DPO having put 2 2016 batteries in because they didn't have any 2032 batteries handy and didn't know any better.
Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
Re: Remote fob battery
So, pulled the fobs apart, new CR2032s all round and 2 work, the 3rd will not program. It does the flashing indicators when you program it via the one fob in the ignition the other in the door method, but will not then lock and unlock the doors. I may try doing it by Vagcom. It may be dead though as that one (I think) had the pair of CR2016s in.
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