Skip the auto shop - Our mechanics make house calls

Q: Odometer malfunctioning, ABS light on constantly

asked by on

My car performs just fine, but the odometer isn’t working properly and neither does the trip. The ABS light stays on constantly and every time I start my car, the Service light will come on, but only briefly. It goes off after around a minute. What can I do to get the odometer to properly start clicking again?

A: On the Volvo 850, there is a plastic gear o...

On the Volvo 850, there is a plastic gear on the odometer/trip meter unit inside the instrument cluster that is known to wear out. The instrument cluster will have to be removed, disassembled, and the gear replaced to correct the odometer issue.

The ABS Light is most likely on due to a fault in the system. Wheel speed sensors or hydraulic unit issues are common causes for faults in the ABS system. The ABS computer will need to have the faults read out and corrected to get the light off.

The Check Engine Light is most likely being illuminated by a soft fault in the system. You may want to have the fault memory read out of the engine computer as well and have any faults corrected.

You may want to enlist the help of a mechanic, such as one from YourMechanic, who will not only be able to diagnose the warning lights, but also perform the delicate repair of the odometer gear, as damage to instrument cluster can be very costly.

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: What do the odometer and trip meter do?

The odometer in your car tells you just one thing – the number of miles on the engine. This is critical information, and is necessary for a very wide range of things, from the title of the car (if you...

Q: Key only turns in ignition sometimes

Hi. Many GM cars experience this problem. It is probably a worn ignition switch; both in the key part, and in the electric switch itself. These simply wear out with use. It will take a qualified technician to confirm the...

Q: Hood and bumper detaching

I think your best bet is to have someone visually inspect the car in person. It may be caused by loose hardware, or it could be warping plastic. I believe a body shop would be the best place to go...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...