Skip the auto shop - Our mechanics make house calls

Q: High-pitched constant beep

asked by on

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?

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!
  1. Home
  2. Questions
  3. High-pitched constant beep

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: I put a fuel pump in and a fuel pump relay. The relay works but there is no power to the fuel pump.

Hi there. There could be an issue with the wiring to the fuel pump between the fuel pump relay and the fuel pump. Remove the wiring to the fuel pump and check the resistance from the wiring from the relay...

Q: The brake lock intermittently at highway when the vehicle is been driven between the gap bumps and spongy brake pedal atimes

Considering the vehicle is a 2016 with just over 20,000 miles, your best bet may be to take it to the Lexus dealership service department. Considering the vehicle has anti-lock brakes, the wheels should not be locking up under any...

Q: Car won't start

The battery should be load tested by a professional. Load testing can only be reliably performed on a fully charged battery. If the battery passes a load test be sure it is NOT a marginal pass in which case you...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.