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Highlander

Hi Kyle. Thanks for contacting us today. I'm not sure whether or not the alternator replacement has anything to do with this symptom. However, it is possible that during the removal, an electrical fault may have disabled a transmission speed...

This fault code is set when the torque converter lock up function does not activate within one to 3 minutes of cruising at least 50 miles per hour. There are several things that can cause this fault, anything from worn...

Hi There, It sounds like you may have a charging problem that may be a result of a faulty alternator or voltage regulator. You may have a failing voltage regulator that could be allowing the alternator (https://www.yourmechanic.com/services/alternator-replacement) to supply too...

If the check engine light is flashing, you need to stop driving the car. The check engine light will come on steady if the engine controller has detected a fault in the engine management system. It will flash if the...

Hi Julissa. Thanks for contacting us today. There are several rear suspension components that could possibly be damaged on your Highlander. I'm not sure if your particular Highlander comes with an air-ride suspension, but if it does, an airbag failure...

Load test the vehicle battery (https://www.yourmechanic.com/services/battery-is-dead-inspection). Sometimes when a battery is on the verge of failure, the resulting voltage drop "fools" the vehicle alarm system as this voltage drop is interpreted by the computer as tampering. If the battery passes...

Hi Jessie. Thanks for contacting us today. The VSC light stands for the vehicle stability control system. If the VSC light came on, then you may have an issue with one of the speed sensors causing the system to engage....

What you are describing sounds like a wheel bearing (https://www.yourmechanic.com/services/wheel-bearings-replacement) that may be starting to fail. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the...

Hello, thank you for writing in. There are both ways to lower the volume and turn off the audible alert that sounds when you lock and unlock the car. They both have their own procedure that is available in the...

Hi there. In general, there is not an effective way to clean a clogged catalytic converter. There are several aftermarket products that claim to do so, but they typically cause more issues with fuel system components that I would never...

Yes. I would replace the tensioner at the same time since the only addition would be parts and there would be minimal labor added since you are already removing the water pump. The tensioner is most likely just as worn...

Check engine lights are just an indication to the operator that there has been a failure in the system and the computer will store a failure code for the failure. The problem you are having may be a misfire in...

The passenger airbag light will illuminate when the system has a malfunction or is turned off to warn the driver in case there is actually a person sitting in the passenger seat. When the light turns off, the system is...

Louder at idle is a concern. At idle, oil pressure is at its lowest which particularly impacts the valve train. If the issue is not "within" the engine, other possibilities are the circuit of accessories that are driven by the...

Although some service manuals do refer to engine removal, that advice is in error. So long as the engine is properly and safely supported, the lower control arms can be readily removed. The bushings on these arms are not separately...

Several things may cause code P0171 and P0174 to be triggered. As the codes indicate, there is a lean fuel condition present, which may be caused by a lack of fuel supply or in some cases, a vacuum leak. When...

Hi Elizabeth. Thanks for contacting us today. I've forwarded your inquiry to our sales and service department so they can determine if we're able to replace the knock sensor of your 2002 Toyota Highlander. They should be contacting you via...

The engine has to be removed in order to replace the water pump on this engine. The labor just for the water pump is 13 hours. This does not include diagnosis or additional repairs needed like thermostat or any other...

Hi There, Typically, a lean fuel condition will produce DTC code P0171, which indicates a lean fuel condition often times associated with "bank 1 or 2 too lean" as you have indicated. A number of things may cause code P0171...

The P means powertrain. The second P is not normal and may just be the scanner you are using. This vehicle does not use the second letter P. I would disregard it. As far as the P0306 it indicates a...