Dim or flickering Toyota HVAC
Some 2003-2009 Toyota 4Runner vehicles may exhibit a condition where the HVAC control panel illumination is dim, flickering or intermittently inoperative. A newly designed light bulb has been made available to resolve this concern
This TSB applies to vehicles produced before the production change effective VINs listed here:
The new light bulb is available as P/N 90010-09017.
- Confirm the concern.
- Remove the air conditioning control assembly.
- Replace the 2 light bulbs for the HVAC control panel illumination circuit. Using a small flat-blade screwdriver, turn the light bulbs counterclockwise to remove and clockwise to install/tighten.
- Reinstall the air conditioning control assembly and confirm the repair.