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Service bulletins for the 2015 Mazda CX-5

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

603 on file from NHTSA, as of 2026-10-19.

About B10E7 on the 2015 Mazda CX-5: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: B10E7 are shown. Show all

Bulletins, newest first
09-026-20-37352020-09-01. Service bulletin. STRUCTURE:BODY:DOOR; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 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.
09-036-18-35262018-10-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE; STRUCTURE:BODY:DOOR; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. 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.
09-008/162016-07-14. Service bulletin. ELECTRICAL SYSTEM. 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.