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To be fair, nothing to do with the Polestar bits; all V60s of that era with the same equipment must be equally unreliable. |
Another 2015 Polestar v60 owner here - had some flakey electrical issues myself, actually had the BMS cable changed at last service as thought could be giving some of the problems. Discovered that as this includes the negative earth strap that this was badly corroded and could be causing voltage issues at times.
Probably not causing this but something to be aware of. The facebook polestar groups contain a lot of knowledge about the cars - and we know they have a big current drain compared to other volvos for some reasons so prone to battery issues. |
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Seems to have gone away since I readjusted the boot liner away from where the tailgate mechanism connects. It must be fouling the electrical sensors, where it had slipped. |
Mine started showing the message occasionally and it then became permanent after a couple of months. I've had a local guy come out and read the codes and he said it reports that the siren internal battery is faulty.
I've taken the siren out and taken it apart with an angle grinder on the welds. It contains a pair of AAA Nimh batteries like in a cordless phone. I've bought the batteries for £3 off eBay and they are due to arrive on Wednesday. I'll update on whether it's been successful. Fingers crossed! |
I hope it works for you.
I took a battery pack from another alarm siren (a Landrover part, same siren unit) , charged it, it kept fully charged for at least 1 month. Fitted it to the Volvo siren. Still the same fault message. The LR circuitry plus charged battery pack also gives the same error message. Maybe there is a perceived siren fault by the car unrelated to the siren. That's why I'll get the local dealer to fit a new siren; if it doesn't sort it, they surely can't charge me for it. |
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Bit the bullet and took it to my local Volvo dealer to sort out. After much investigation and phone calls the invoice says:
"Fault code BID1787 Battery backed sounder, replaced battery backed sounder". A couple of other codes for reference, "V30659882" and "063112/Siren" which may be part numbers but not sure. The repair was about two weeks ago and so far it appears to be fixed as the car is behaving normally. Parts and labour came to ~£330. Hope this helps. |
Ouch. The replacement batteries I've bought have a different plug so I've cut the plugs off to rejoin.
Whilst the red wire strips to clean shiny copper, the black wire has corroded inside along its length and won't solder. Looking closely at the circuit board, it appears the corrosion has tracked back to the connecting pin and a couple of points on the circuit board. I've tried cleaning it but haven't had a chance to try it in the car yet. The first code refers to an alarm siren, I wonder if they're all a bit different and incompatible. Looks like it's going to be £300 vs £3. |
I've fixed it!!!
In my last post I cracked open the siren and replaced the AAA NiMH batteries but noticed there was quite a bit of corrosion. Fitted it in the car and left it overnight but still got the error message. The part no. on the back of mine was 6G9N-19G229-BK, however, 1 bought a siren off ebay 6G9N-19G229-CG from a 2014 Mazda 2 for £12.55. Plugged it in but still got the error message. Left it overnight and the error message has gone! Hope this helps someone else. |
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It came with the original Mazda bracket and wiring sub loom. What a lovely thing, galvanized steel with no sharp edges, compared to the nasty Volvo crudely stamped black painted bracket. |
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