2018 Volvo XC60
Mileage
58,850
Service Date
4/22/2025
Services Performed
- CUSTOMER REQUESTS THAT DIAGNOSTIC BE PERFORMED
- CONTINUED: This am new message on dash "12 v battery charging fault, stop safely" was on. TECHNICIAN – Test drove vehicle, inspected operation & found; Vehicle drove well. No driveability issues noted. – Inspected for dash/warning lights, found; Start stop system service required & 12v battery charge fault messages. – Scanned computer control modules & found codes; CEM **B10A6-13 for support battery power input circuit open **B129-F-96 for battery control switch module – Inspected & found; Per fault tracing cleared codes. Removed cover for auxiliary/support battery under hood. Found after market fuse holder connected into positive post for support battery located on battery control module. Found wire was loose. Tested battery, only had 1.5 volts, voltage did not change with vehicle running. Auxiliary battery failed load test. Removed after market fuse holder and tightened nut properly. Started vehicle, found both batteries started with having 14.8 volts. After running for a few minutes found auxiliary battery voltage dipped down below 5 volts and stayed low. Found when backing vehicle out of shop code **B10A6 – 13 returned right away. – Note: This battery controls the stop start feature and is linked in with other modules. If left as is will/can drain main battery. – Determined / Suspect; Connection of auxiliary battery and battery control module was loose and had an after market fuse holder in place. These issues caused the auxiliary battery for the start stop feature to drain and fail. – Recommends; Removing the yellow fuse holder cable and not reinstalling it. Then replacing the auxiliary support battery and then resetting the BCSM module. *** Further Damage Possible ***
- TECHNICIAN INSPECTED AND FOUND: – No LOF sticker found. – Engine oil level & condition; Full. Good. – Front brake pads at approximately; 10mm. – Rear brake pads at approximately; 6mm, 50%. – Spark plugs worn / L3 = Due. Mileage maintenance guide recommends replacing spark plugs at 60,000 miles. Recommend performing engine tuneup with replacement of all spark plugs, throttle body and fuel injection services.
- Technician disconnected both batteries. Performed battery reset for system. Cleared all codes. Removed and replaced the auxiliary battery. Test drove. Verified repair. Verified no codes returned.
Josh C. gave our service a 5 star review on 4/23/2025
