Toyota Corolla Cross: Rear Wiper Rubber

 DCM System Internal Failure (B15A804)

DESCRIPTION This DTC is stored when an internal circuit malfunction is detected by the DCM (telematics transceiver) self check. DTC No. Detection Item DTC Detection Condition Trouble Area B15A804 DCM System Internal Failure

 Wireless remote control/electronic key battery

Replace the battery with a new one if it is depleted. As the key may be damaged if the following procedure is not performed properly, it is recommended that key battery replacement be performed by your Toyota dealer. ■If the key battery is depleted The following symptoms may occur: The smart ke