I installed LED's in the over-head/map and doors...now the vehicle will not start. I pulled the battery, took it down to Autozone and they charged it up and told me there were no bad cells. Re-installed and it fired right up. Three days later, go to start it this morning and same thing!

Both times I can confirm there was nothing left on to drain the battery while sitting. And there is enough juice in the battery to illuminate the dash and all normal lights upon entry/exit loco/unlock.

Can these LED's be causing some form of drain on the battery that makes it so I do not have enough cold crank amps?

Any insight is greatly appreciated...

I have always changed interior bulbs to LED's and have never had this problem. FYI I did not change any other bulbs; only the over-heads and bottom doors (no turns, footwells, frunk or rear deck lid). Terminals are clean...

HELP! Thanks

 

Any chance the overhead light switch is set to "on"? I've accidentally hit mine when changing out bulbs.

 

That is bizarre because LED's use much less power than conventional lights. I know on the exterior fogs my LED's will only work with the bulb installed in one position; reverse it and the lights don't work. I don't recall that issue with my interior LED's but you might try systematically removing bulbs to see if you can isolate it to one location.

 

I agree with the others that something doesn't seem to add up. The car would turn off power to the LEDs just like the original bulbs so I don't readily see how they could be causing this drain.

It would seem the first thing to try is to put back the original bulbs for a period of time and see if the problem persists or disappears. Maybe something else just happened to go wrong about the same time and you are being misled into thinking it is the LEDs. If the problem goes away with the original bulbs, then I'll be quite confused too.

 

Nope...for sure checked them...

Totally agree on less power draw, and the polarity is luckily not an issue in this case as all bulbs function properly...the ones that DO NOT work are for the turn signals. I am going to have to buy resistors if I want to run them....bummer too because I found some great 5k and Amber replacements

Turns out it is just time for a new battery...coincidence! Very glad

Sooo...now the question is, what type of replacement does everyone recommend? I am familiar with Interstate, Optima, Duralast and OEM Mopar...H8 was the reading so it is a standard battery replacement. Please let me know what you have done if your time was up...

 

Glad it was simple. Clearly, one of the problems that is difficult to trouble shoot is an electrical issue when you did something else electrically at about the same time. You always suspect your own work!

 

Thanks Dan...you are right, it was driving me NUTS! I kept going over and over what I did, what it could be, did I miss something? But now it is time for a new battery!

So are people replacing theirs with OEM? The upgraded AGM? Other brand? Please do tell

 

H7 @ Costco

 

H7? The AAA battery reading/print-out says H8...anyone else??

 

buy the best agm you can afford. Deka, Exide, Bosch. Optima, are all good.

 

make sure you check the date codes on your new battery purchase and try to get one that's date code is within 3-6 months of purchase.

 

Lots of good info here. Both battery sizes seem to fit fine, but the larger one requires some additional hardware to secure it. AGMs are great batteries. I have had very good luck with AutoZone's Durlalast AGM batteries in my other cars. It also appears an OEM one can purchase through an Audi dealer for less than the Porsche dealer.

https://rennlist.com/forums/997-foru...ouncement.html

 

H7/94R is the correct size - H8 will fit - it's longer so you'll have to modify the hold-down clamp. Was-Mart, Interstate, Bosch are all good choices. The OEM is a Moll - while a good battery, warranty isn't as good as aftermarket. You can get a Bosch AGM through Pep Boys on-line usually with a 25% discount - pick it up at the store.

 

If going to cheap get Walmart. If willing to spend a little extra get an AGM battery. OEM is overpriced.

 

I believe that the H8 is a little longer than the OEM H7 battery. It will fit but the metal bracket that holds the battery in position needs to be moved to accept the larger battery