V70 SRS and CEM issue

jc30 · Oct 20th, 2022, 18:39

Hi all

I decided to fully charge the battery in my 2008 P3 V70 just before winter kicks in. Since I refitted it I'm getting the SRS Service now message which when I reset it with my plug in it comes back on seconds later. Typically it's also due it's MOT soon. I'm getting B1A5568 crash record output algorithm failures from the SRS module and B10A202 crash input general signal failure and B10A215 crash input short to battery or open from the CEM. I'm getting 12.5V at the battery terminals and clamps with my multimeter but my plug in is only showing 11.8V. It starts no problem. Has anyone had this before?

TIA
John

Simmy · Oct 20th, 2022, 19:26

this is a common problem caused by low voltage or a failing alternator. the crash data module has set a hdd code which cannot be erased with a code reader you will need to find the cause of your low voltage and fix it then send the module for repair. crash data in Liverpool do a postal service for this. the module is most likely to be under the center console. i have just repaired this problem on my c70. scan with vida to find your voltage loss and to confirm the crash module fault.

jc30 · Oct 31st, 2022, 16:17

It was a dying battery, confirmed with one of those digital load testers. New battery fitted and no SRS light on either, thanks again for your help!

Simmy · Oct 31st, 2022, 20:03

nice one i think you have been lucky not to incur an hdd code . they can be a real pain to deal with . keep driving and enjoy your car

Oct 20th, 2022, 18:39	#1
jc30 New Member Last Online: Oct 31st, 2022 16:17 Join Date: Sep 2012 Location: Wallyford	V70 SRS and CEM issue Hi all I decided to fully charge the battery in my 2008 P3 V70 just before winter kicks in. Since I refitted it I'm getting the SRS Service now message which when I reset it with my plug in it comes back on seconds later. Typically it's also due it's MOT soon. I'm getting B1A5568 crash record output algorithm failures from the SRS module and B10A202 crash input general signal failure and B10A215 crash input short to battery or open from the CEM. I'm getting 12.5V at the battery terminals and clamps with my multimeter but my plug in is only showing 11.8V. It starts no problem. Has anyone had this before? TIA John

Oct 20th, 2022, 19:26	#2
Simmy Premier Member Last Online: Today 17:10 Join Date: Mar 2017 Location: Manchester	this is a common problem caused by low voltage or a failing alternator. the crash data module has set a hdd code which cannot be erased with a code reader you will need to find the cause of your low voltage and fix it then send the module for repair. crash data in Liverpool do a postal service for this. the module is most likely to be under the center console. i have just repaired this problem on my c70. scan with vida to find your voltage loss and to confirm the crash module fault.

Oct 31st, 2022, 16:17	#3
jc30 New Member Last Online: Oct 31st, 2022 16:17 Join Date: Sep 2012 Location: Wallyford	It was a dying battery, confirmed with one of those digital load testers. New battery fitted and no SRS light on either, thanks again for your help!

Oct 31st, 2022, 20:03	#4
Simmy Premier Member Last Online: Today 17:10 Join Date: Mar 2017 Location: Manchester	nice one i think you have been lucky not to incur an hdd code . they can be a real pain to deal with . keep driving and enjoy your car

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