Porsche 2003 C4 battery hold down bolt won't come out.

5

Asked by Mar 05, 2016 at 05:16 PM about the 2003 Porsche 911 Carrera 4 AWD Convertible

Question type: Maintenance & Repair

I bought a new battery, but can't get the old one out. The hold down bolt was
loosened and moves about freely, but won't screw out completely, and the
clamp is loose also. It feels like the nut is not attached to the battery tray
that it sits in and turns around without coming loose when I turn the bolt.

5 Answers

1,905

Try spraying a lot of penetrating fluid eg Liquid Wrench on it and leaving it a few hours. Then pull the nut up to the battery tray and try to lock it in place with the force on the battery tray as you undo the bolt. If that doesn't work, can you get thin pliers to the nut? Failing that, you will likely need to cut the bolt off with a dremel or similar.

595

Where did you purchase the battery? Auto Zone or O'Rileys, install for free. And, probably are use to seeing your problem on a daily basis. Let us know how you did. Good luck.

1,910

Using a small pry bar under the head of the bolt while exerting upward pressure on the bolt head, use a 6 point socket with extension if necessary, and then turn the bolt counter clockwise. Keep the strong upward pressure on the underside of the bolt. This almost always works. Good luck!

5

I finally got the old battery out. It was bought from and installed by a local Mobil station. Turns out that they ordered the wrong battery for my Porsche and decided to cram it into the car. It was too long by 1.5" so the hold down was relocated to a hole outside the normal, with a simple nut and bolt. I had to remove the plastic cover on the passenger side of the battery in order to get a wrench on the nut. The new battery is the proper size and fits easily into the intended position. Thanks for all the help.

1,910

As usual, it's do it yourself if you want it done right. You've got a Porsche, never trust it to any shop that doesn't specialize in them. I wonder how many batteries were installed in Porsche's by that station??

Your Answer

911

Looking for a Used 911 in your area?

CarGurus has 4,942 nationwide 911 listings starting at $10,988.

ZIP:

Porsche 911 Experts

  • #1
    Michael Kane
    Reputation
    1,050
  • #2
    Andrew Dickens
    Reputation
    660
  • #3
    tntjobs
    Reputation
    590
View All

Related Models For Sale

Used Porsche Boxster
47 Great Deals out of 1,183 listings starting at $4,500
Used Chevrolet Corvette
298 Great Deals out of 20,714 listings starting at $2,990
Used BMW M3
48 Great Deals out of 1,799 listings starting at $5,995
Used Porsche Cayenne
101 Great Deals out of 4,452 listings starting at $3,500
Used Ford Mustang
714 Great Deals out of 38,330 listings starting at $895
Used Mercedes-Benz SL-Class
64 Great Deals out of 2,945 listings starting at $4,500
Used BMW 3 Series
1,175 Great Deals out of 33,351 listings starting at $1,000
Used Chevrolet Camaro
428 Great Deals out of 30,916 listings starting at $3,550
Used Mercedes-Benz E-Class
495 Great Deals out of 19,986 listings starting at $1,200

Used Cars For Sale

2018 Porsche 911 For Sale
414 listings starting at $96,860
2017 Porsche 911 For Sale
12 Great Deals out of 974 listings starting at $81,488
2016 Porsche 911 For Sale
9 Great Deals out of 285 listings starting at $76,874
2015 Porsche 911 For Sale
23 Great Deals out of 468 listings starting at $65,995
2014 Porsche 911 For Sale
9 Great Deals out of 292 listings starting at $59,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.