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

5

Asked by 951tracker Mar 05, 2016 at 05:16 PM about the 2003 Porsche 911 Carrera 4 Cabriolet AWD

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

4,765

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.

815

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.

4,600

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.

4,600

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 3,679 nationwide 911 listings starting at $16,900.

ZIP:

Own this car?

Share your experience with others.

2003 Porsche 911

Review another car

CarGurus Experts

  • #1
    Andrew Dickens
    Reputation
    1,960
  • #2
    Michael Kane
    Reputation
    1,940
  • #3
    Stephen Smith
    Reputation
    1,350
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Corvette
693 Great Deals out of 12,039 listings starting at $4,995
Used BMW M3
52 Great Deals out of 1,133 listings starting at $10,900
Used Porsche Boxster
45 Great Deals out of 551 listings starting at $3,250
Used Porsche Cayenne
263 Great Deals out of 2,753 listings starting at $4,000
Used Mercedes-Benz G-Class
115 Great Deals out of 2,642 listings starting at $20,000

Used Cars For Sale

2024 Porsche 911 Carrera 4 Cabriolet AWD For Sale
1 listings starting at $159,700
2020 Porsche 911 Carrera 4 Cabriolet AWD For Sale
1 listings starting at $129,899

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. Content will be removed if CarGurus becomes aware that it violates our policies.