Instrument panel lights are off and the car will not start?

Tiny
MOHAMAD12764
  • MEMBER
  • 2007 AUDI Q7
  • 4.2L
  • V8
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
Firstly, I turned the key to the first click but in the second click the car made a voice for 2 seconds, but the engine won't work.
i checked the battery it was too low then I tried again but the same thing
happened.
When I tried for the third time I turned the key to the first click but no lights in
the dashboard turned on
then when I checked the battery again its level was 0.
I charged the car battery using a cable and it charged but still, the same
problem when I turn the key on the first click no light in the dashboard on all
the lights off and I can't open the windows, but the radio is on and I can open
the window using the key and I can control the car's main screen but the
screen on the Instrument panel is off.
Thursday, June 13th, 2024 AT 3:38 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I was always taught to start at the power source when there was an electrical issue. So, here is what I suggest to start: Remove the battery, fully charge it, and then take it to a parts store and have them load test it to make sure we don't have a bad cell inside the battery.

If you want, here is a load test you can try at home before taking it. This doesn't require any tools to perform.

https://www.2carpros.com/articles/car-battery-load-test

If you have already done this, let me know. Also, what did you mean by you heard a voice when trying to start it? Are you referring to the starter motor or something inside from the radio?

Let me know.

Joe
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Thursday, June 13th, 2024 AT 8:45 PM
Tiny
MOHAMAD12764
  • MEMBER
  • 4 POSTS
Thank you for your advice, I will try that and the sound it is like every day when you turn on the engine but here it won't turn on.
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Friday, June 14th, 2024 AT 2:28 AM
Tiny
MOHAMAD12764
  • MEMBER
  • 4 POSTS
But if the problem is in the battery why I can open the windows by the key, but I can't open it with the button in the car and why the screen for the radio is turned on and I can check the battery level by it but no lights in the dashboard.
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Friday, June 14th, 2024 AT 2:36 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,640 POSTS
The battery sounds bad to me, how many years old is it? How did it do on the load test guide?
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Friday, June 14th, 2024 AT 6:43 PM
Tiny
MOHAMAD12764
  • MEMBER
  • 4 POSTS
I don't know but it's too old and very weak.
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Saturday, June 15th, 2024 AT 6:49 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,640 POSTS
Let us know after you install a new battery, this guide can help:

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Please go over this guide and get back to us.

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Saturday, June 15th, 2024 AT 10:56 AM

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