C7 would not unlock

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May 13, 2020 | 04:30 PM

MrClean21

Thread Starter

Instructor

Joined: Apr 2019

Posts: 239

Likes: 62

From: West Sacramento, CA

C7 would not unlock

For the second time my 2018 GS would not unlock after sitting for about a week. I tried each door and rear trunk. None of these would unlock. I then tried with my remote and that didn't work either. I used my key to unlock the back of the car, and of course set off the alarm, which I couldn't turn off. After the alarm went off I was then able to unlock the door at will. It started just fine once I gained access. Has anyone else had this issue and is there a fix or just something I have to put up with? Thanks.

May 13, 2020 | 04:41 PM

eboggs_jkvl

Moderator emeritus

Joined: Jun 2001

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Likes: 3,954

From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati

2015 C7 of the Year Finalist

First thing to try is replace the FOB batteries both FOBs.

Then, come back and let us know if you still have issues.

Elmer

May 13, 2020 | 04:44 PM

Landru

Race Director

Joined: Dec 2002

Posts: 10,465

Likes: 1,149

From: Wayne Township WI

Quote:

Originally Posted by MrClean21

Unless willing to let it sit at a dealer, might have to.
At least until it becomes intolerable, an '18 still has B2B left I'll guess.
Even then any reported issue has to be reproduceable for a tech in order to be fixed.

Sure battery isn't in the process of crapping out?
Has it been load-tested?
Tried a charger for a day or 2?
Sure sounds like a battery.

Consistently using a tender's a wise practice w/ these juice hogs, too.
Doing so seems to greatly minimize starting problems after periods of inactivity.

May 13, 2020 | 05:07 PM

MrClean21

Thread Starter

Instructor

Joined: Apr 2019

Posts: 239

Likes: 62

From: West Sacramento, CA

Thanks for the replies. If it was the key fob battery or car battery why would it be back to normal after I set off the alarm with the key? I can then unlock the car at will and as I said it started right up. I'll do as you suggest and replace the fob batteries. Won't hurt to do those. Then I'll see what happens. If I have the car in for service I'll have them load test the car's battery.

You guys are awesome!

May 13, 2020 | 05:48 PM

Gearhead Jim

Team Owner

Joined: Sep 2000

Posts: 25,015

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From: Far NW 'burbs of Chicago

St. Jude Donor '13

Quote:

Originally Posted by MrClean21

Thanks for the replies. If it was the key fob battery or car battery why would it be back to normal after I set off the alarm with the key?
...

Never trust an electron.

May 13, 2020 | 08:06 PM

edweiler

Racer

Joined: Dec 2018

Posts: 485

Likes: 168

From: Gainesville, Ga.

Quote:

Originally Posted by MrClean21

I just had similar issues of "whacko things going on" ...It was in my case my battery in the vette, not the remotes for me...2015 Z-51 vert...had to reprogram the top so the computer knew where it really was and had to reprogram the windows after the battery was replaced (both simple things to do)...the rest was ok after...What a pita it was to change out the battery!

May 13, 2020 | 11:30 PM

owc6

Team Owner

Joined: Apr 2013

Posts: 26,232

Likes: 4,357

From: Chirper Island

Quote:

Originally Posted by MrClean21

I hate to tell you. but your car battery is on the way out.

May 13, 2020 | 11:50 PM

Grand Slam

Melting Slicks

Joined: Oct 2004

Posts: 2,085

Likes: 710

From: Sunnyvale CA

Several times recently my car did not recognize me next to it. The first time using the fob opened it. The second time it did not. After opening the fob and finding out I ordered the wrong size 2032 batteries I wiped the battery clean and reassembled. It has worked since.