V60 2015 d4 - alarm activated and won't switch off

Weeholl · Jul 19th, 2021, 10:20

Hi, had intermittent fault showing for alarm service but it goes away. Last night the sirens went off at 2am. Eventually stopped after a few mins with engine running
Remote key didnt deactivate. Left it unlocked overnight (securely) to save wakening neighbours again. Any advice? Thanks

Deck1ng · Jul 19th, 2021, 11:31

Could this possibly be a duff battery within the alarm itself. Would account for the alarm being silenced when you ran the car.
From reading other posts the alarm unit was under the wing liner on the near side. I have also seen a UTube video of the built-in battery pack being rebuilt or I suppose it‘s purchasing a new unit. (If it is indeed the battery pack)

GrahamHR · Jul 19th, 2021, 22:25

I have an ongoing alarm problem with my 2015 V60 Polestar. Alarm triggered with no reason, but no siren, just the hazard lights flashing to begin with. Then it stopped triggering unless the door etc was opened. Siren battery is fine ( I stripped it down). The code reader tells me BUS communication has been lost with it and the immobilizer.

For a £50,000 car with 16,000 miles on it, such a fault is inexcusable. What poor quality.

I'll live with it until the next service in January.

Jul 19th, 2021, 10:20	#1
Weeholl New Member Last Online: Jul 19th, 2021 19:12 Join Date: Jul 2021 Location: Glasgow	V60 2015 d4 - alarm activated and won't switch off Hi, had intermittent fault showing for alarm service but it goes away. Last night the sirens went off at 2am. Eventually stopped after a few mins with engine running Remote key didnt deactivate. Left it unlocked overnight (securely) to save wakening neighbours again. Any advice? Thanks

Jul 19th, 2021, 11:31	#2
Deck1ng Master Member Last Online: Apr 26th, 2024 23:51 Join Date: Apr 2018 Location: North Yorkshire	Could this possibly be a duff battery within the alarm itself. Would account for the alarm being silenced when you ran the car. From reading other posts the alarm unit was under the wing liner on the near side. I have also seen a UTube video of the built-in battery pack being rebuilt or I suppose it‘s purchasing a new unit. (If it is indeed the battery pack) __________________ Current, XC60 AWD D5 SE DRIVe 1st motor. Austin A35, indicators and heater optional. Not forgetting RTFM

Jul 19th, 2021, 22:25	#3
GrahamHR Senior Member Last Online: Today 08:42 Join Date: Mar 2016 Location: Kelsall	I have an ongoing alarm problem with my 2015 V60 Polestar. Alarm triggered with no reason, but no siren, just the hazard lights flashing to begin with. Then it stopped triggering unless the door etc was opened. Siren battery is fine ( I stripped it down). The code reader tells me BUS communication has been lost with it and the immobilizer. For a £50,000 car with 16,000 miles on it, such a fault is inexcusable. What poor quality. I'll live with it until the next service in January.

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