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.
Resources for the Repair and Maintenance of your 2001 Toyota Highlander
2001 Toyota Highlander
2001 Toyota Highlander Problems
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.
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.
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.
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.
2001 Toyota Highlander Recalls (Recent)
Summary: 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 TO MOVE INTO THE UNLOCK POSITION.Learn more »
Summary: VEHICLE DESCRIPTION: SPORT UTIITY VEHICLES. THE RESERVOIR FILLER CAP OF THE BRAKE MASTER CYLINDER MAY INDUCE A VACUUM, INTRODUCING SOME AIR INTO THE BRAKE MASTER CYLINDER RESERVOIR. THIS COULD CAUSE ABNORMAL BRAKE NOISE AND INCREASED PEDAL STROKE WHEN THE BRAKES ARE APPLIED.Learn more »
Summary: ON SPORT UTILITY VEHICLES, THERE IS A BREATHER HOSE THAT ATTACHES TO THE NOZZLE OF THE ON-BOARD REFUELING VAPOR RECOVERY (ORVR) VALVE, WHICH IS LOCATED ON THE TOPSIDE OF THE FUEL TANK. THE BREATHER HOSE IS ATTACHED WITH A CLAMP, WHOSE "TABS" FACE IN THE UPWARD DIRECTION. WHEN THE VEHICLE WAS CRASHED UNDER THE NEW CAR ASSESSMENT PROGRAM (NCAP) TEST (I.E., 35 MPH FRONTAL BARRIER CRASH), THE CLAMP "TABS" CONTACTED THE UNDERSIDE OF THE BODY DUE TO MOVEMENT OF THE FUEL TANK, CAUSING THE NOZZLE TO BREAK.Learn more »
2001 Toyota Highlander Questions and Answers
OUR CAR PASSED THE CA EMISSIONS TEST BUT FAILED THE 'MONITORS' CHECK. TEST ONLY COULD NOT TELL ME WHAT TO DO, MY DEALER COULD NOT TELL ME WHAT TO DO, WHAT DO I DO?
Where is the cabin air filter in the 2001 Highlander 6 cy.
No air coming from vents, any clue why this suddenly stopped? I drove through some driving rain storms yesterday, but I doubt that contributed. Thanks.
What should I expect to pay to replace the charcoal canister on the emissions system for my 01 highlander? Thanks.
2001 Toyota Highlander Reviews
I've bought my Highlander new and it is the best and my favorite vehicle that I have ever owned (4 previous Hondas over the years). I can't say enough good things about it...only problem I have had is the CEL comes on sometimes and the deal tells me it's nothing yet change the oil filter and it goes right off!
HIGHly recommend this car!!
I have a 2001 Higlander...it just turned 200,000 miles. I LOVE my car. I have replaced the sensors ($800), new battery once, new tires once, air filter, regular oil changes, timing belt, this is a great ride. I do roughly 450 miles a week. its a 6 cly 4 wd...I love it and it has been very good to me.
I purchased this V6 Highlander new in 2001. It has over 230K miles. Has had one set of Brake Pads, 2 Batteries, 2 Transmission Oil Changes, Routine Oil Changes (Synthetic). The "Check Engine Light" came on three times, and went off as soon as I had the Air Filter Replaced.
I am 70+ year old high mileage driver. I have worn out a lot of cars in my 55 years of driving. The only complaint I have is that the A/C doesn't get cool enough for high Desert Summer Heat.
I have a local mechanic do the routine maintenance because I took it to the Toyota Dealership for the first oil change. They insisted they put in 7-Qts of oil..It only holds 5 qts.
I can not praise this vehicle enough.
air conditioner warm air through the drivers outlet
good car, some electrical problems with heating system, and check engine light though.