How do you replace key less remote battery on Honda Accord?

Answer 1

The size of screw driver is a #0 Phillips. If the key is only a few years old, any cheap #0 will work. Older keys need a better driver, and it needs to be heated with a lighter or candle before removing. Honda uses a thread locking chemical on the screw. 08 and up Accords and 09 up Pilots have a problem with a protective grease getting on the battery. The battery is not weak! A Honda dealer should fix it for free. I have worked on thousands of these keys. If you need advice ask me at fixmykey@gmail.com

1. Use a jeweler's screwdriver (I used a 2.4mm phillips, which worked for me) to loosen the screw.

2. Pull apart the two key halves, (my key had a little slot on the side to make that easier)

and remove the little black capsule with the door lock, panic buttons etc. from the key.

[my Honda Accord 2010 key was a little difficult to open: it didn't want to separate at the top and I was concerned about breaking the plastic - but screwed up my courage and applied force and it eventually popped open, and I could then see that my concern was unfounded ]

[if it doesn't want to separate at the top, open a quarter inch, and pull the back half down toward the metal key, which will disengage the top hinge]

3. You'll need to open the capsule from one end with a small jeweler's (flat head this time) screw driver.

[note the orientation of the two halves, they only fit correctly one way - so that the contacts touch the battery negative surface and the positive landing pad]

4. On a 2008 Accord key, the battery inside was a Panasonic CR1616 3V watch type battery.

[2010 Accord likewise; Honda doesn't bother to include this information in the owner documentation]

5. The reason that I was opening my 2010 Accord key was weak signal and the local Honda service manager told me that this complaint was due to dielectric grease at the contact points.

Sure enough, there were drops of grease on the battery negative surface and on the positive copper landing pad . I wiped the contact surfaces clean removing the offending grease.

6. It is almost two years since I first cleaned the "grease" off the battery. Unfortunately, I've had to perform this cleaning operation about every 4-6 months since. Where the "grease" is coming from I can't imagine - maybe it's not grease but some other defect ?? Anyway, my experience is that I need to clean it every 4 months.

7. Also, I tried a dab of Loctite on the Phillips head screw since it was loosening - but that made it very difficult to remove the next time ... it is crucial to have a screwdriver that fits exactly, and if Loctite is used to be very sparing. .