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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Safety Connect System - Diagnostic Codes & Symptom Tests >> Safety Connect System >> DTC B15C5-11: Emergency Call Switch Circuit Short to Ground; DTC B15C5-13: Emergency Call Switch Circuit Open [10/2020 - 10/2022] >> Description

DTC B15C5-11: Emergency Call Switch Circuit Short to Ground; DTC B15C5-13: Emergency Call Switch Circuit Open [10/2020 - 10/2022]: Description

This DTC is stored when the DCM (telematics transceiver) detects an open or short circuit in the manual (SOS) switch.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C5-11 Emergency Call Switch Circuit Short to Ground Manual (SOS) switch impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG)
  • DCM (telematics transceiver)
  • Map light assembly
  • Harness or connector
B15C5-13 Emergency Call Switch Circuit Open Manual (SOS) switch impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the engine switch is on (IG)
  • DCM (telematics transceiver)
  • Map light assembly
  • Harness or connector