Dashboard flickering

Hello,

Good day to all.

I have been having some recent issues with my TJ were my dashboard lights flickers when starting the car. It flickers very quickly and makes sound for like 5-15 seconds, then goes to regular 3 sound warning when starting. This happens only during the night or when its cool temperature. During the day when it’s warm it does not happen. Any idea what this could be? There aren’t any engine code. Thanks!

Thanks for the feedback! Am I suppose to see a ground wire here?

This morning, when starting the engine, I experienced something extra. Normally the car starts quickly, but this time there was a fast crank before it started, along with the same issue as before.

Here is the sequence of events this morning:

When I opened the car door, there was no interior light and no dash illumination. After about 10 seconds, the lights and dashboard finally came on.

When I tried to start the engine, it cranked but did not fire. The crank was fast, not slow, which suggests the battery was fine (it’s new and fully charged). I tried again immediately, and the engine started right away.

After starting, the dashboard flickered for about five seconds before the normal warning lights appeared. Everything seemed fine afterward, and the car started normally for the rest of the day. The dashboard flickering only happens when it’s cool outside at night, even after a just drove the car for miles. However, during the day when its warm, everything is fine.

GATORB8 said:

No, G is ground:
View attachment 666738

I'd definitely check for a weak battery first. Sounds like the starter is drawing voltage down and the battery can't compensate anymore.

Click to expand...

Thanks, will check battery again, but this only happens when ambient temp is cool. Mostly at night even after driving a lot.