Skip the auto shop - Our mechanics make house calls

Q: 2006 Lexus V8. Should I spend $900 to replace timing belt at this low milage?

asked by on

Recently purchased a near perfect SC430 Lexus. Always heard that Lexus engines should last at least 100,000 miles before needing serious attention. Is the dealers service manager just trying to drum up business? Ten year old car only 39,000 miles. What will happen to engine if timing belt fails? Will it ruin engine? TAS

My car has 39000 miles.
My car has an automatic transmission.

A: Hi there. As a former Lexus Master technici...

Hi there. As a former Lexus Master technician, there is an not only a mileage change interval for the timing belt, but also an age interval of 8 years. This is what is suggested in the original owner’s manual.

The age/time change interval is due to the fact that the rubber in the belt doesn’t last forever and can become brittle and crack. A timing belt failure in this engine would be catastrophic as this is an interference engine. This means that, if the belt breaks, then the pistons will strike the valves resulting in severe engine damage. The service manager there isn’t just trying to drum up business, he was within ethical rights to offer the timing belt service.

However, theses vehicles are also known to have water pump leaks due to age as well. It’s a hit or miss with the water pump, and the technician usually will not know until he has the front of the engine torn down to replace the timing belt. If you would like to have a second opinion on the car, a local expert from YourMechanic can come to your car’s location to inspect the vehicle and advise you on any work that is needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Timing belt problem - 2004 Nissan Maxima

Actually yes it is normal. I will go through a few things that you may or may not have done and hopefully we can get your issue resolved. When you put your crankshaft pulley on did you use an impact?...

Q: Multiple warning lights due to electronic control module - 2009 Kia Borrego

As the problem is fairly uncommon, it is likely the engine ecu did experience a processing failure and caused many warning lights to illuminate once the computer lost communication with the other systems. All of the systems where warnings came...

Q: Car misfiring

An ignition coil could very well be the cause of your concern. If the diagnostic trouble code shows the cylinder being affected, the ignition coils can be switched to see if the misfire follows the coil. Other issues such as...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.