Q: Dash lights are on and have issues with the battery and the transmission.

asked by on

My e46 325i is having issues. It starts with battery light coming on and then brake lights, traction control lights, abs, check engine light. Pretty much every light. When driving, it's like it downshifts hard and my transmission goes into safe mode with exclamation point next to the gear indicator on the dash. I've replaced alternator and when it left the shop, everything was charging and doing good and about five miles later, back to same old stuff. Sometimes she fires right up, then other times it acts like a dead battery and after I turn the key off, there is a weird noise from under the hood somewhere sounds like an engine or some kind of whining noise almost sounds like it's in the dash or firewall area. I've ordered a new computer for it and I've had it hooked up and it read something about my drivetrain control module but I'm still not sure if that is the problem and was wanting to know if I'm headed in the right direction or if this is a common issue or what.

My car has 187086 miles.
My car has an automatic transmission.

Hi there. First check the computer for any codes that could be stored as the check engine light is on. This will give you a starting place where the problem could be coming from. If the drivetrain control module is not working, then the brake light, traction control light, and the ABS light could come on. Since you have all three lights on, it is possible that the drivetrain control module could have failed making the transmission go into limp mode. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your vehicle if you cannot fix the issue.

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. Dash lights are on and have issues with the battery and the transmission.

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: Pressing the gas pedal and not getting the desired output

It may not have anything to do with your valve adjustment. Your car is almost 30 years old so it could have any number of problems. I would begin by checking for air leaks. Look at all of the hoses...

Q: Q: Limp mode

Hello, thank you for writing in. The Limp Mode is activated as a safety precaution due to the computer detecting an issue that will potentially cause further damage. There are a wide variety of sensors that are inputs for the...

Q: Car wont run in D at first, need to start in second or first gear.

This may be related to a few different issues such as a faulty shift solenoid or failing torque converter in your transmission. When either of these happen and too much torque is applied (i.e. starting in 1st gear), this can...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...