Toyota Highlander Owners Manual: Maintenance and care

Maintenance and care

...

Cleaning and protecting the vehicle exterior

Perform the following to protect the vehicle and maintain it in prime condition: Working from top to bottom, liberally apply water to the vehicle body, wheel wells and underside of the vehicle ...

More about Toyota Highlander:

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 indicator lamp comes on The obd system determines that a problem exists somewhere in the emission contr ...