Changing the battery in my 2004 Infiniti G35 6MT
I recently replaced my battery in my 2004 Infiniti G35 6MT and found the lack of instructions annoying so I am posting the steps I took to replace the battery. I hope this helps others that either don’t live next to an Infiniti dealer or just want to do it themselves (I fall into both categories). Any image can be clicked on the get a larger version.
Step 1
Remove the rubber lining around the battery cover that is closest to the windshield
Remove the rubber lining from the edge of the cover
Step 2
Remove the pins from the battery cover using a flathead screw driver. These should pop out rather easily. There should be 5 that you have to remove.
The 5 holes where there are pins to remove
Use a flathead screwdriver to remove the pins
Step 3
Remove the battery terminals from the battery using either a wrench or a socket. The negative cord should be easy to move out of the way, but the positive cord was a little tougher since it had some extra hardware on it.
The negative terminal has been removed and moved to the side
Preparing to remove the positive terminal
Step 4
Unplug the two plugs from the bottom of the positive cord in order to maneuver it out of the way a little better. Using a flatehead screwdriver push in on the little bracket that is holding each plug in place.
Push the clip in to remove the plug
The first plug has been removed
Both plugs have been removed and the main terminal is moved to the side
Step 5
Unbolt the crossbar holding the battery in place. I only unbolted the end that is clearly visible and then unhooked the other end by twisting it around until it came unhooked.
Unbolt the crossbar holding the battery in place
Step 6
Remove the battery. This can be tricky since there is very little clearance. You may need to bend the plastic covering a little in order to have enough room to get it out.
Very little clearance to move the battery out
Now that you have the battery out, you should be able to reverse the steps to put everything back together. Back in step 1 when you are replacing the pins, make sure to slide the pin up a little before pressing it into the hole. The image below should help out.
Keep the "disc" of the pin around the middle when you insert it into the hole
After I got everything hooked back up I fired up the car and I was back on the road.
Google+
You can take off the plastic trim under the windshield wipers easily, too, to avoid having to navigate around it. Take off weatherstripping, then remove two more of those plastic pins, and the left half of the plastic trim under the windshield pulls out, too. It has three tabs on the backside that grip the windshield glass, so after freeing pin on right side, pull down and in to release.
Followed the instruction and I am back in business. I found that if I remove the plastic trim under the windshield wipers as suggested by VanceWade, I did not need to do step 4 Unplug the two plugs from the bottom of the positive cord. Hope this simplifies thing a bit for others.
Excellent. Used the instructions above, thanks for taking the time to take pics and give detailed instructions. It went very smooth. Thanks also to VanceWade’s additional suggestion which did allow it to go smoothly.
Very helpful, Tim. Replaced my battery today without any issues. The pictures and the notes were extremely useful! I wish it was easier to get these details in the Infiniti Owner’s Manual. Thanks again…
+1 to thank you for taking time to take photos and publish this guide!
very helpful – thanks for your great pics!
This guide with pictures was very helpful. It took me 20 minutes to swap out the battery. I saved almost $100 by doing this myself rather than going to the dealer. Thanks!
Fantastic! I had never replaced a battery myself but had no problems and even skipped step 4. Thanks so much!
First hit in my Google results, only link I needed. Perfect walk-thru! Sometimes it just helps to see an example first. On the road in 15 minutes…
Excellent instructions. I am not replacing the battery, but am checking my fuse box for the A/C does not work, hoping it is a relay. Thank you.
Thank you so much for this tutorial with pictures! As other commentors mentioned, using VanceWade’s advice made it easier to remove the battery. Looks like the stock batteries in these cars lasted quite a while.
10mm – the spanner and/or socket size needed to loosen all bolts/nuts in this process.
Thanks for the instructions!
Thank you so much! This was a life saver. Was standing outside autozone trying to get it done. I couldn’t have without this walk through. Awesome!
Can’t thank you enough. Was trying to do this after a very long day and you cut my frustration and time in half. Tim, thanks for taking the time to help others!
Thank you so much!!! Incredibly easy and I am not too handy! Saved me a bundle! Can’t thank you enough!!!!
Thanks so much Tim for posting! I used Vance’s tip on removing the moulding and was able to complete it. The hardest part was getting the pins back in, and now I see that I should have pulled that tab down to the middle first. Oh well, got most of them back in, dropped a couple when trying to replace them though. All in all I’m very happy with my work