Problems for specific Toyota Highlander years:
Problem Reports
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2002 Toyota Highlander Problems
Check Engine Light Due to Hose Off of Air Filter Housing
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.
Airbag Light Due to Problematic Center Airbag Sensor
A problematic center airbag sensor can cause the airbag malfunction light to illuminate.
Check Engine Light Due to Failed Oxygen Sensor
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.
Misfire and/or Check Engine Light Due to Failed Ignition Coil
On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.
Check Engine Light Due to Failed EVAP Purge Control Valve
Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.
Excess Engine Oil Consumption
Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.
Low Engine Idle and/or Stalling Due to Dirty Idle Air Control Valve
Debris can get into the idle air control valve. This will restrict the air flow into the engine, causing idle speed and/or stalling when cold. The valve can be cleaned or replaced to correct this concern.
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