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S60 & V60 '18> / XC60 '17> / S90 & V90 '16> / XC90 '15> General Forum for the SPA-platform 60- and 90-series models |
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XC60 "stop/start service required"Views : 898 Replies : 2Users Viewing This Thread : |
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Oct 11th, 2020, 17:03 | #1 |
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XC60 "stop/start service required"
I have the above message and a DTC of CEM-B11D914 Battery failure, but both batteries are fine. The S/S function does not work, and my version of the wirring diagram shows a Red wire going to the CEM from the Primary fuse box. This wire has 12.6v on it the same voltage as the small additional battery anyone had similar problem??
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Oct 12th, 2020, 10:30 | #2 |
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It's likely that the support battery voltage drops when under load (ie during stop/start) but looks OK otherwise.
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Oct 12th, 2020, 20:13 | #3 |
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I thought that may be the cause but since it never goes into S/Start, as far as I can see the battery is just sat there doing nothing. It never runs down? The CEM thinks its too low and never allows a S/Start.
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