Q: High-pitched constant beep

asked by on October 01, 2016

I recently purchased a used 2010 Lexus GX460. One owner, 83000 miles on it, it now has 86,00 miles. Two days ago it began to make this high pitched noise that if I were a dog it would set me to howling (but it is driving me crazy). No lights go on. Not heard outside of the car. Sound occurs while engine running and a few seconds after engine turned off security light goes on when sound stops. Can drown out sound with radio. Hear sound with AC off or in and with all other gadgets off/on. Help!!

My car has 86000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. There are two places that this can normally come from. The air suspension compressor is known to make this kind of high pitch sound. The third row seats will also make this kind of high pitch sound when not fully raised or lowered. Try running them through a full cycle from up to down and back up. Once this is done the sound should go away. If it doesn’t and you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Remote and windshield issues

If you can lock and unlock the door using the driver's door switch but not the remote, then you may have a remote communication issue. If pushing the unlock button twice does not unlock the door, then your lock's module...

I have a 2010 ford explorer xls. It turns on but doesnt start or crank.

Hi there. If the security light is flashing when trying to start the vehicle then most of the time this is the result of a failure in the key recognition circuit. It is either the receiver not picking up the...

Hi, my Toyota fortuner 2010 is vibrating soon after reaching speed of 100km/h. Secondly, it is also when idle with start engine.

Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal...

Related articles

How to Troubleshoot a Car That Makes a Loud Screeching Sound When it Starts
Cars make a screeching sound when serpentine belts slip or crack. Lubricate car belts or have them replaced to fix the screeching noise.
How to Turn Off the Reverse Beep in a Prius
The The Toyota Prius is designed to shut off the engine when stopped as an energy-conserving measure. When the accelerator is depressed, it starts to back up, so you can go about your business on the road. When your Prius...
How to Get Lexus Dealership Certified
Lexus dealerships offer automotive technician jobs to those who are Lexus certified through UTI’s Toyota Professional Automotive Technician program.