Toyota 4Runner: Do-it-yourself maintenance

Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction ind ...

Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. CAUTION The engine compartment contains many mechanisms and fluids that may move s ...

Other materials about Toyota 4Runner:

Operating the lights and wipers
Headlight switch The headlights can be operated manually or automatically. Turning the end of the lever turns on the lights as follows: Type A 1. The daytime running lights turn on. 2.   The side marker, parking, tail, license plate, daytime r ...

Security Indicator Light Circuit
DESCRIPTION When the engine immobiliser system is set, the security indicator light blinks continuously, but does not illuminate if the engine immobiliser system is not set. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When the tr ...