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:

System Description
SYSTEM DESCRIPTION 1. AUTOMATIC LIGHT CONTROL SYSTEM (a) General When the headlight dimmer switch is in the AUTO position, the automatic light control sensor detects ambient light levels and outputs a signal to the main body ECU (multiplex network body ...

Unable To Connect To Call Center
DESCRIPTION This may occur when the intensity of the telephone radio frequency was very weak, PRL updates are required or the Safety Connect system has a malfunction, and a DTC is stored. PROCEDURE 1. CHECK COMMUNICATION SERVICE C ...