Skip the auto shop - Our mechanics make house calls

Q: Speedometer stopped working, how do I repair it? 2003 Audi A6

asked by on

while driving at a constant speed speedo needle started to rise and fall then eventually dropped to zero, where it stayed for the rest of the journey.

My car has 115000 miles.
My car has a manual transmission.

Hello - most likely the speedometer sensor has failed, or the wiring to it has become disconnected. Check that first. It’s also possible that the speedometer sensor drive gear has failed (small plastic gear), or the instrument panel speedo gauge has failed - but these 2 possibilities are less likely. I would recommend a speedometer failure diagnosis by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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: My rear passenger tire blew out earlier today and tore off some wiring under the car. Replaced wiring but no fuel goes to engine?

To determine if the fuel pump is disconnected, turn the key to the "on" (not start) position and listen for the in tank fuel pump momentarily running (the pump should make a brief "whirring" noise and then stop). If you...

Q: what is an HydraulicTensioner?

Hello. A "hydraulic tensioner" is simply a fluid filled device, where the fluid exerts a calibrated amount of pressure on a hardened steel pin that in turn pushes on a pulley arm to keep the timing belt taught. If the...

Q: Im trying to figure out if something is clooged or just plain not working anymore

I would start with the basics first like the fuel and air filter change. Either of these filters can cause the lack of power. Then look at the tube between the air filter and the throttle body and if there...

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...
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...