Mazda CX-5 2026 — technical service bulletin
Bulletin SA-046-26 · NHTSA communication 11035608 · issued Aug 1, 2026
Technical service bulletin
communication type
Electrical System
component
2026
model years
1
vehicle entries
Official summary
DESCRIPTION If a BCM failure occurs due to laptop rebooting/crashing during a BCM software update with MDARS II, keep the vehicle ignition ON and refer to the Recovery Procedure below. NOTE: When the BCM has lost communication with the vehicle, no vehicle functions will be operable. REPAIR PROCEDURE Recovery Procedure 1. Using the same laptop, disconnect the current MDARS II session and open a new session. 2. Scan the vehicle. 3. While the vehicle is scanning, disconnect the negative battery terminal. Wait 3 minutes, then reconnect the terminal. 4. Wait for MDARS II to complete vehicle scannin
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.