Q: ABS Light on, speedometer not responding, and air conditiong shuts down

asked by on

My car's rpm niddles jumps up and down, then the ABS and brake lights come on dashboard and then the air condition stops cooling as well. Sometimes the temperature niddles jumps as well and the speedometer doesn't respond and the gear signal on the dash board blinks as well.
My car has an automatic transmission.

Hello. Since you are receiving multiple warning lights, you will want to start by having the vehicle scanned for diagnostic troubleshooting codes. This will give you some insight to the issues the computer has already detected, and will make diagnosis much easier. You can have this done by a technician, or at most local auto parts stores. You are likely having more than one problem at the same time.

The rough idle issue is often related to fuel and spark issues. This is likely the worst issue. While the air conditioning is a separate system. The gear indicator light on the dashboard is its own system as well. The only common factor between these systems is the power supply (or battery). You may want to make sure your alternator is keeping your battery fully charged. If you would like to have this checked, a certified technician from YourMechanic can come to your car’s location to diagnose the warning lights and proceed with needed repairs.

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. ABS Light on, speedometer not responding, and air conditiong shuts down

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: Applying brakes at stop lights and the vehicle slides.

Hello. If the brakes are staying applied and the wheels are locked but the vehicle begins to slide it is because of the slickness of the roadway. There is not going to be any way to prevent this unless you...

Q: The power steering goes out occasionally, the AC does not work, and the engine loses power.

The O2 sensor has many codes associated with the sensor itself. Some codes can indicate that your engine is running lean and alternatively some can mean that your engine is running too rich. The power steering and A/C have pressure...

Q: Car vibration while at a stop

Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal...

Related articles

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.