Electrics: - Alarm Sounder

cornerwaysuk · May 4th, 2020, 16:24

Hi,
I have just replaced the alarm sounder on my XC90. Now when I bought the sounder direct from Volvo it came with a bonnet catch? Not sure why but the instructions within the box show replacing them both? Is this actually normal? do they both need to be replaced? I have done the sounder and it seems to be working fine now. One last thing.....The instructions also say that the sounder replacement will require a software update? Again is this required?
Regards Eric

john langrick · May 5th, 2020, 08:23

Hi, I replaced mine about 3 years ago. The replacement bonnet catch is still in its box. No software update when I did it although the instructions indicated it needed it. Of course you have to reset the error code.

No issues for last three years.

Hope this helps.

John l

SwissXC90 · May 5th, 2020, 08:56

The bonnet catches are notorious for failing due to ingress of road grime and moisture, and thus triggering the alarm.

The replacement catch is likely an improved more reliable design, and replacing it would be a proactive maintenance item to prevent future false alarms.

May 4th, 2020, 16:24	#1
cornerwaysuk Cornerwaysuk Last Online: Jan 4th, 2024 17:21 Join Date: Sep 2007 Location: Manchester View Photos By: cornerwaysuk	Alarm Sounder Hi, I have just replaced the alarm sounder on my XC90. Now when I bought the sounder direct from Volvo it came with a bonnet catch? Not sure why but the instructions within the box show replacing them both? Is this actually normal? do they both need to be replaced? I have done the sounder and it seems to be working fine now. One last thing.....The instructions also say that the sounder replacement will require a software update? Again is this required? Regards Eric

May 5th, 2020, 08:56	#3
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	The bonnet catches are notorious for failing due to ingress of road grime and moisture, and thus triggering the alarm. The replacement catch is likely an improved more reliable design, and replacing it would be a proactive maintenance item to prevent future false alarms. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

May 5th, 2020, 08:23	#2
john langrick Master Member Last Online: Today 13:23 Join Date: Dec 2016 Location: Southend on sea	Hi, I replaced mine about 3 years ago. The replacement bonnet catch is still in its box. No software update when I did it although the instructions indicated it needed it. Of course you have to reset the error code. No issues for last three years. Hope this helps. John l

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