Skip the auto shop - Our mechanics make house calls

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.

A: Hello. Since you are receiving multiple war...

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 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・Save up to 30%

Get a quote

What others are asking

Q: Multiple warning lights due to electronic control module - 2009 Kia Borrego

As the problem is fairly uncommon, it is likely the engine ecu did experience a processing failure and caused many warning lights to illuminate once the computer lost communication with the other systems. All of the systems where warnings came...

Q: ABS light is on.

Your truck is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Q: How do I turn on the automatic climate control air conditioning?

The air conditioning system provides cold air to your cabin, to help keep you comfortable on hot days. To turn on the air conditioning in the automatic climate control system, press the A/C button on the right side of the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...