Q: Warning lights not showing up after a battery drain

asked by on

After accidentally leaving my lights on, my friend and I used jumper cables. After it started, 'all' of the warning lights came on. And then, on top of that, when I started driving, it would only accelerate about a mile-an-hour! What is the problem?

The computer is in a failure mode after you jump started due to the low voltage condition. If after the battery gets some of the charge back and you shut the car off and restart it, the systems should go back to operating normal again. The computer is just protecting itself. If the problem continues even after the battery is recharged and the engine is restarted, then you may have damaged the computer system from an improper jump start or an over voltage surge. If this is the case, then seek professional mechanical help for a thorough diagnosis of your warning lights in person.

Was this answer helpful?
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. Warning lights not showing up after a battery drain

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: Can a fuel pump drain my battery?

As you may know, the fuel pump does in fact receive power from the battery, however it is highly unlikely that the fuel pump would continue to run when the power to the car is off causing the battery to...

Q: New battery goin dead over nite

Hi there. To check to see if something is still on with the key on, remove the ground cable to the battery and put a digital volt ohm meter (DVOM) on the cable and onto the battery negative post. With...

Q: Alternator not grounding on 2000 BMW 323Ci

Hello. If this occurred right after the accident, then I would check the ground connections on the battery first. If they are fine, then the wire going from the battery to the alternator needs to have a voltage drop test...

Related articles

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...
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...
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.