Lexus TSB #L-TT-0253-18_Rev
2019 Lexus IS 350
TSB Document:
Affected Component: EQUIPMENT:ELECTRICAL
- Summary
- TT: The microphone circuit passes through the DCM before reaching the radio/navigation system. To simplify the diagnosis of the microphone, Safety Connect SOS button lights, and DCM (telematics transceiver) inoperative conditions, refer to the procedure below to prevent unnecessary parts replacement.
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