Q: idling rough warning lights

asked by on

My Z4 is running rough while idling and the warning lights are on. I changed the car battery and the problems still exist. I put a battery charger on the battery located in the trunk. My car would not start, so I bought a new battery. Now the car idles rough, the warning lights for the brake, Engine Management Light and engine light are on. Do you have any ideas as to what the problem is?

Hello. I think the car is running rough because the Check Engine Light is on. It is possible that the alternator is not working properly causing low voltage, which would make the car difficult to run properly. I would suggest that you have a certified technician, like one from YourMechanic, complete an inspection to diagnose why your Check Engine Light is on. This technician should also inspect the battery and charging system.

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. idling rough warning lights

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: Car sputters and runs rough upon acceleration. 1995 BMW 318i

Hello. Thanks for writing in about your 1995 BMW 318i. This problem is usually caused by worn out spark plugs and spark plug wires. When the spark plugs are worn out they don’t fire as well during acceleration. If the...

Q: What Types of Trouble Codes Cause Lights to Come On in My Dash?

Different vehicles have a different number of lights on the dashboard to warn you of problems, some with just a few basic lights while others have plenty to distinguish between different issues. This article will cover just the bright yellow...

Q: 03 Honda Accord EX which starts, shakes, then dies, yet when restarted cranks up just fine and runs. Ideas??

My first guess is that you may have a leaking fuel injector. When an injector is leaking from the tip, there is no visible sign. When you shut off the engine, the tip of the injector will drip into the...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...