Battery keeps draining, left turn signal stays on

CASSANDRA PIERCE

MEMBER
2004 JEEP GRAND CHEROKEE
6 CYL
4WD
AUTOMATIC
180,000 MILES

My vehicle's battery keeps draining overnight. Starts right up when jumped, and no lights have been left on. Lately, the left turn signal will stay on after put back in normal position and you have to click it up and down a few times to get it off. I've made sure it isn't on when leaving the vehicle. I had all electrical wiring in the battery terminal replaced last year and the battery is also new. The turn signals are always going out and I've been replacing bulbs regularly for several years. Trying to figure out what's draining the battery, a relay? Signal wire?

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

There is not one thing that would cause this issue but we need to start with this guide. It will help us figure out possible causes.

https://www.2carpros.com/articles/car-battery-dead-overnight

If we need to we will need to monitor the draw on the battery. Do this by putting your meter on amp and take the negative battery cable off and connect one lead to the cable and the other to the battery post. This way the current from the vehicle is running through the meter so we can see how many amps are there. You should have .025 or less amps or in other words, 25 milliamps.

If you have more then this, we need to remove fuses until this is down under this level.

Here is a guide that will help with using a meter if you need it:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Let us know what questions you have and we can work through this. Thanks