Affected Component: ELECTRICAL SYSTEM

Date Published
DEC 22, 2017
NHTSA TSB #
10129351
TSB Document
Summary
Some customers may complain about one or more warning lights ON when they start the vehicle during hot weather. The following DTCs are stored in memory: U3000:98 - Forward sensing camera (FSC) stops functioning due to temporary high temperature. U3000:04 - Forward sensing camera (FSC) internal malfunction. The combination of warning lights mentioned by the customer may include: SCBS/SBS, LAS/LDWS, HBC, Master Warning LightInstrument Cluster Multi-Information Display (if equipped) warning messages may include: Forward Smart City Brake Support Malfunction, Smart Brake System Malfunction, Front Camera Sensor System Malfunction, MAZDA CONNECT center display warning messages may include: High Beam Control [HBC] / Lane-keep Assist System [LAS] Malfunction. Have the vehicle checked by a dealer if this indicator stays on. Smart City Brake Support [SCBS] Malfunction. Have the vehicle checked by a dealer immediately. Note: The center display Warning Messages are only displayed when the customer selects Applications>Vehicle Status Monitor>Warning Guidance>Warnings. This condition may be caused by FSC control logic that is too sensitive. When the FSC detects DTCU3000:98 during high temperature, it stops the internal communication and stores DTC U3000:04. DTC U3000:04 will not clear and SCBS/SBS, LAS/LDWS, and/or HBC functions will not resume until the ignition switch has been turned OFF, even if the temperature of the FSC cools. Before FSC Reprogramming: The warning lights/messages will be displayed until the FSC cools and the ignition is turned OFF, then back ON. Instrument Instrument Cluster Warning Lights and MAZDA CONNECT Warning Messages Cluster Warning Messages Warning Lights (With Multi-Information Display) (Without Multi-Information Display), Note: These Warning Messages are displayed when the customer selects Applications>Vehicle Status Monitor>Warning Guidance>Warnings.