Q: Is my transmission failing?

asked by on

My 2009 Audi A4 started making a high humming noise at high speed (30-60mph). It sounded like it was coming from the transmission. It is related to road speed and not engine speed. The noise does not change with any steering or brake input. It has slowly been getting worse, and is now loud between 20 and 60mph. It sounds like a ring and pinion wearing funny. Every now and then when the car is close to idle and slow speeds, the engine stalls out. Otherwise, the engine works flawlessly. All transmission fluids and diff fluids have been checked. It seems to be trans related, but it hard to pin point. When the car is off the ground, the noise seems to go away a little.

Can anybody confirm this is actually failing? Thanks.

My car has 97000 miles.
My car has an automatic transmission.

97 Thousand miles is pretty early for a transmission failure on your car, but not unheard of. Your description of the sound actually made me think of a front wheel bearing, though I wouldn’t usually describe a wheel bearing as "high" pitched. That being said: if you’ve had the fluid changed and the shop didn’t use the VW transmission fluid, that will usually result in a whining noise in the transmission. Another thing that can happen is that the seal between the final drive and the transmission section can fail and allow differential oil to contaminate the transmission fluid. You’re at a point where you need to have a professional take this car for a drive and get under it and give a good listen. If you contact Your Mechanic, they can send a technician to your home or office to check out your Audi and let you know what it’s going to take to fix it.

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
  1. Home
  2. Questions
  3. Q: Is my transmission failing?

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: Random misfire cylinder 123

I'm curious as to what codes are still active. Is it still a misfire code? Several other component failures can cause "misfire" issues - a clogged exhaust gas recirculation valve, a failed diverter valve, even a failed cam phaser. But...

Q: ABS light, traction control light and handbrake light blink at the same time and the car jerks

It is not clear from your description if the noise you are hearing is primarily engine versus chassis (suspension, etc.) related. The origin of the noise can be pinpointed though if you request a vehicle noise diagnostic. That the ABS...

Q: Engine light on, black smoke coming out exhaust on acceleration and fault codes

The glow plug faults are most likely going to cause a hard start condition, which will be most noticeable when the engine is cold. The colder the engine, the more difficult it would be to start usually. Often times, glow...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...