Q: Knocking sound from beneath the glove compartment

asked by on

My car has around 93,000 miles. When I turn on the a.c., there is a knocking noise that sounds like it is under and back of the glove compartment area. This is a pre-owned car and I keep having to replace parts. Now this. What do you think the knocking sound is?

Behind the glove box is the cabin air filter, blower motor and AC mode actuators. Any of the mode control actuators, such as the blend or mode actuators, can cause the knocking noise when the gears inside them fail. A qualified technician such as the ones at YourMechanic will have little trouble diagnosing this noise issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Knocking sound from beneath the glove compartment

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: Rock knocked out my AC, is it bad quality?

Honda knows about this condition on the Odyssey model (along with other models) and there is plenty of evidence on this issue. The issue is that a small rock (pebble) is able penetrate the front grille at a sufficient speed...

Q: Key for switch

Hello, Yes, even with the remote starter capability, you can also use the key in the ignition as normal as well. The remote starting feature is just an added convenience, but it not the only method to start the vehicle....

Q: Warning sound is coming intermittently while driving 2012 Nissan Altima

Hello - random or intermittent noises as you describe are tough to diagnose. If you notice any specific conditions for when the noise occurs, that would be helpful: when accelerating or going up hills, when turning (left, right or both),...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...