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Home >> Lexus >> 2022 >> RX 450hL >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge System (Diagnostic Codes) (2 Of 2) & Symptom Tests >> Meter / Gauge System >> DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [08/2019 - ] >> Description

DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [08/2019 - ]: Description

This DTC is stored when the combination meter assembly detects a short in a turn signal light circuit.

HINT: 

If there is a short in a turn signal light circuit, all of the turn signal lights in that circuit will not blink.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B1508 Short in Turn Signal / Hazard Flasher Circuit Diagnosis Condition:
  1. Auxiliary battery voltage is 7 V or more

Malfunction Status:
  1. Short in turn signal light circuit
  • Outer rear view mirror assembly
  • Outer mirror retractor*1
  • Side turn signal light assembly
  • Radio receiver assembly
  • Towing converter relay
  • Harness or connector
  • Combination meter assembly
for TMK Made 
  • No. 1 headlight ECU sub-assembly*2
  • Headlight unit
  • Front turn signal light socket*3
  • Front turn signal light bulb*3
  • Rear light cord*3
  • Rear turn signal light bulb*3
  • Rear light assembly*4
  • Rear light socket and wire*4
for TMMC Made 
  • Headlight assembly
  • Front turn signal light socket*3
  • Front turn signal light bulb*3
  • Rear combination light assembly
  • Rear light cord*3
  • Rear turn signal light bulb*3
  • Rear light assembly*4
  • Rear light socket and wire*4
DTC stored -
  1. *1: w/ Power Retract Mirror
  2. *2: w/ Automatic Headlight Beam Level Control System
  3. *3: for Bulb Type Turn Signal Light
  4. *4: for LED Type Turn Signal Light