C6 CYAA

My 5 year old Optima red top gave up today. I do keep it on a cycle charger when it's parked and thought it was strange that it was so hard to start today. The convertible top retracted but the car would not go into Comp mode. I drove for about 30 minutes hoping to re-charge the battery. When I shut it down and tried to re-start it was dead. I figured after 5 years the battery was done. I installed a new battery and she starts right up but the top won't go back up and still it won't go into Comp mode. I checked the fuses and can't seem to find the trouble. Any clues???
Thanks!

Bill Dearborn

Do you have any other issues? Are the tire pressure sensors all reading proper values? If you see XXX for any of them or a low pressure reading the EBCM will not go into Competition mode.

As for your top there are 8 DTCs related to the top but you will need a scanner like a GM Tech 2 that can read body codes to see if any exist. Don't even bother with an autoparts store scanner.

I am attaching a general diagnostic for the top.

Something else to check is the ground for each switch.

Bill

C6 CYAA

Bill,
Thanks for the info. I left the car in the garage for the afternoon to think about what it had done. The issues have resolved themselves. I think the computer just needed some alone time.
Thanks again!

cclive

Usually after a new battery, the windows need to be re-indexed and the convertible top will not move until they are. The top needs to know that they are down all the way before it will move.

Joe_G

Exactly correct.

Just roll both windows all the way up and hold the buttons for 30 seconds or so. Top should work then. Probably have to drive a bit to register tire sensors to get comp mode to work.

dzl_x_4x4

This worked for me!

Disconnected the battery with the windows and top down. After I re-connected the battery, the top would not work. Then I re-indexed the windows and it works!

Thanks Guys, this saved me a trip to the stealership.

AORoads

I actually forgot the re-indexing thing even tho I put in a battery about two years ago! I was thinking that the top needed to have its pressure released on the passenger side, or some such. Thanks for reminding me of the window thing, Chris!

One question for OP: is there a different type of battery maintainer needed/helpful for an Optima vs. for a regular battery that you know of?

C6 CYAA

I have used the factory GM charger for 9 years on two Optimas with no issues.

AORoads

Good to know! Thank you CYAA.