2003 Toyota Highlander Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Toyota Highlander

When changing the air filter, it is easy to knock off a hose on the air filter housing, which is part of the emission control system. If the vehicle is driven with this hose disconnected, the Check Engine Light will illuminate.

A problematic center airbag sensor can cause the airbag malfunction light to illuminate.

The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.

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Changed out all bulbs still can't get the drivers side break light to come on.

read fluid leaking under engine

An intermittent check engine light that is on more that off these days. Changed gas cap with new OEM one. Engine seems to run fine.. smells a little rich on start up. 249,000 miles one my truck.. smog test comming in April. Where should I look?

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CERTAIN SPORT UTILITY VEHICLES HAVE A CHILD PROTECTION LOCK (CPL) SYSTEM ON BOTH OF THE REAR SIDE DOORS. WHEN AN OPERATOR OF THE VEHICLE CLOSES THE DOOR VERY HARD WITH THE CPL LEVER SET TO THE LOCK POSITION, THERE IS A POSSIBILITY THAT THE LEVER MAY CONTACT THE BODY PANEL, CAUSING THE CPL LEVER ...

Toyota has recalled certain 2003 4Runner and Highlander trucks because the lug nuts used for upgraded alloy wheels are not suitable for the spare tire and wheel. If the existing lugs are used, the spare tire may loosen and come off. Dealers will provide owners with newly designed lug nuts, a warning label for the spare wheel, and an owner's manual addendum.

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Sweet ride, reliable. Handles well, regardless of weather. Only has 56,000 miles on it but it looks and acts nearly brand new!

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