# B10E7 on the 2014 Mazda CX\-5

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B10E7

- [10179083](https://open.wenmarpro.com/bulletins/10179083), 2020-09-01: Some vehicles may experience one or more of the following symptoms in connection with a malfunction related to the C\-15 connector. • The driver side power window does not operate. • The door does not open when using the advanced keyless system. • The warning lamp stays ON even after the ignition switch is turned OFF. • DTC B10E7:17 \(START STOP UNIT, IG1 Relay Circuit Malfunction\) and DTCs related to communication errors may be stored in PCM memory. • Engine no start due to battery discharge. • Clicking sound from throttle body.The symptoms listed above may be caused by corrosion of the C\-15 connector terminals due to water intrusion through the front door. In low ambient temperatures, the door harness hardens. If the door is fully opened, it may create a gap between the door and the door harness grommet, which may allow water to enter through the gap.
- [10145253](https://open.wenmarpro.com/bulletins/10145253), 2018-10-09: Some vehicles may experience one or more of the following symptoms in connection with a malfunction related to the C\-15 connector. The driver side power window does not operate. The door does not open when using the advanced keyless system. The warning lamp stays ON even after the ignition switch is turned OFF. DTC B10E7:17 \(START STOP UNIT, IG1 Relay Circuit Malfunction\) and DTCs related to communication errors may be stored in PCM memory. Engine no start due to battery discharge. The symptoms listed above may be caused by corrosion of the C\-15 connector terminals due to water intrusion through the front door. In low ambient temperatures, the door harness hardens. If the door is fully opened, it may create a gap between the door and the door harness grommet, which may allow water to enter through the gap.
- [10105514](https://open.wenmarpro.com/bulletins/10105514), 2017-06-07: SOME VEHICLES MAY EXPERIENCE ONE OR MORE OF THE FOLLOWING SYMPTOMS IN CONNECTION WITH A MALFUNCTION RELATED TO THE C\-15 CONNECTOR. • THE DRIVER SIDE POWER WINDOW DOES NOT OPERATE. • THE DOOR DOES NOT OPEN WHEN USING THE ADVANCED KEYLESS SYSTEM. • THE WARNING LAMP STAYS ON EVEN AFTER THE IGNITION SWITCH IS TURNED OFF. • DTC B10E7:17 \(START STOP UNIT, IG1 RELAY CIRCUIT MALFUNCTION\) AND DTCS RELATED TO COMMUNICATION ERRORS MAY BE STORED IN PCM MEMORY. THE SYMPTOMS LISTED ABOVE MAY BE CAUSED BY CORROSION OF THE C\-15 CONNECTOR TERMINALS DUE TO WATER INTRUSION THROUGH THE FRONT DOOR. IN LOW AMBIENT TEMPERATURES, THE DOOR HARNESS HARDENS. IF THE DOOR IS FULLY OPENED, IT MAY CREATE A GAP BETWEEN THE DOOR AND THE DOOR HARNESS GROMMET, WHICH MAY ALLOW WATER TO ENTER THROUGH THE GAP.MASS PRODUCTION CHANGES: • THE FRONT DOOR HARNESS GROMMET HAS BEEN CHANGED TO IMPROVE SEALING PERFORMANCE. • HOLES INSIDE THE FRONT PILLAR \(WHICH ARE MADE FOR WEIGHT REDUCTION\), HAVE BEEN COVERED TO PREVENT WATER INTRUSION.
- [10098144](https://open.wenmarpro.com/bulletins/10098144), 2017-05-03: SOME VEHICLES MAY EXPERIENCE ONE OR MORE OF THE FOLLOWING SYMPTOMS IN CONNECTION WITH A MALFUNCTION RELATED TO THE C\-15 CONNECTOR. •THE DRIVER SIDE POWER WINDOW DOES NOT OPERATE.•THE DOOR DOES NOT OPEN WHEN USING THE ADVANCED KEYLESS SYSTEM.•THE WARNING LAMP STAYS ON EVEN AFTER THE IGNITION SWITCH IS TURNED OFF.•DTC B10E7:17 \(START STOP UNIT, IG1 RELAY CIRCUIT MALFUNCTION\) AND DTCS RELATED TO COMMUNICATION ERRORS MAY BE STORED IN PCM MEMORY.THE SYMPTOMS LISTED ABOVE MAY BE CAUSED BY CORROSION OF THE C\-15 CONNECTOR TERMINALS DUE TO WATER INTRUSION THROUGH THE FRONT DOOR. IN LOW AMBIENT TEMPERATURES, THE DOOR HARNESS HARDENS. IF THE DOOR IS FULLY OPENED, IT MAY CREATE A GAP BETWEEN THE DOOR AND THE DOOR HARNESS GROMMET, WHICH MAY ALLOW WATER TO ENTER THROUGH THE GAP.
- [10076676](https://open.wenmarpro.com/bulletins/10076676), 2016-07-14: VARIOUS ELECTRICAL SYSTEM MALFUNCTION\(S\) RELATEDTO C\-15 CONNECTOR CORROSION. SOME VEHICLES MAY EXPERIENCE ONE OR MORE OF THE FOLLOWING SYMPTOMS IN CONNECTION WITH A MALFUNCTION RELATED TO THE C\-15 CONNECTOR. THE DRIVER SIDE POWER WINDOW DOES NOT OPERATE. THE DOOR DOES NOT OPEN WHEN USING THE ADVANCED KEYLESS SYSTEM. THE WARNING LAMP STAYS ON EVEN AFTER THE IGNITION SWITCH IS TURNED OFF. DTC B10E7:17 \(START STOP UNIT, IG1 RELAY CIRCUIT MALFUNCTION\) AND DTCS RELATED TO COMMUNICATION ERRORS MAY BE STORED IN PCM MEMORY.