Toyota Highlander Service Manual: How to troubleshoot ecu controlled systems

Vehicle lift and support locations

1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP THE VEHICLE  The vehicle must be unloaded before jacking up the vehicle. Never jack up/lift up a heavily loaded vehicle.  When remo ...

General information

A large number of ECU controlled systems are used in the HIGHLANDER. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troub ...

More about Toyota Highlander:

If your vehicle overheats
The following may indicate that your vehicle is overheating. The needle of the engine coolant temperature gauge Enters the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.)  Steam comes out from under the hood. Correction proced ...