Issue After Battery Replacement
Thread Starter
Racer
Joined: Apr 2015
Posts: 430
Likes: 32
Issue After Battery Replacement
Hi,
I just replaced a still working 8 year old battery in my ‘04 C5Z. Easy enough and car starts just fine. However, now every time I start it the heater is at full high heat even though that’s not how I had it set when I turned the car off. I never had this issue before and my car is always on a battery tender since it’s a weekend car.
Did I miss something? No error codes.
Thanks
I just replaced a still working 8 year old battery in my ‘04 C5Z. Easy enough and car starts just fine. However, now every time I start it the heater is at full high heat even though that’s not how I had it set when I turned the car off. I never had this issue before and my car is always on a battery tender since it’s a weekend car.
Did I miss something? No error codes.
Thanks
Last edited by 10thumper; Oct 2, 2020 at 09:09 AM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
LOL! EASY FIX!
Go to key on engine on.
If you have the MEMORY feature, set all your settings HVAC, Radio, seat etc... that you can control to what you want them to remain at. Make sure that you set the level and air circulation modes to the desired settings. If I remember correctly the defrost heat setting is the default setting that it goes to when the battery is disconnected.
Then press and HOLD the MEMORY #1 button on the drivers door until the little light blinks. Now all of those settings are memorized to MEM1 If it were me, Ide also do MEM #2 also so you don't hit it one day and have a similar issue.
You have to re sync the FOBs to the car also so they select the correct memory settings. If the FOBs don't work, just press and hold LOCK and UN LOCK at the same time till the horn beeps. Then the FOB is resynced to the car. If that doesn't work, you will need to RE LEARN the FOB/FOBs to the car.
PS,,,,,, All of this is explained in the OWNERS MANUAL You can find it on line if you need to....
Bill
Go to key on engine on.
If you have the MEMORY feature, set all your settings HVAC, Radio, seat etc... that you can control to what you want them to remain at. Make sure that you set the level and air circulation modes to the desired settings. If I remember correctly the defrost heat setting is the default setting that it goes to when the battery is disconnected.
Then press and HOLD the MEMORY #1 button on the drivers door until the little light blinks. Now all of those settings are memorized to MEM1 If it were me, Ide also do MEM #2 also so you don't hit it one day and have a similar issue.
You have to re sync the FOBs to the car also so they select the correct memory settings. If the FOBs don't work, just press and hold LOCK and UN LOCK at the same time till the horn beeps. Then the FOB is resynced to the car. If that doesn't work, you will need to RE LEARN the FOB/FOBs to the car.
PS,,,,,, All of this is explained in the OWNERS MANUAL You can find it on line if you need to....
Bill
Thread Starter
Racer
Joined: Apr 2015
Posts: 430
Likes: 32
LOL! EASY FIX!
Go to key on engine on.
If you have the MEMORY feature, set all your settings HVAC, Radio, seat etc... that you can control to what you want them to remain at. Make sure that you set the level and air circulation modes to the desired settings. If I remember correctly the defrost heat setting is the default setting that it goes to when the battery is disconnected.
Then press and HOLD the MEMORY #1 button on the drivers door until the little light blinks. Now all of those settings are memorized to MEM1 If it were me, Ide also do MEM #2 also so you don't hit it one day and have a similar issue.
You have to re sync the FOBs to the car also so they select the correct memory settings. If the FOBs don't work, just press and hold LOCK and UN LOCK at the same time till the horn beeps. Then the FOB is resynced to the car. If that doesn't work, you will need to RE LEARN the FOB/FOBs to the car.
PS,,,,,, All of this is explained in the OWNERS MANUAL You can find it on line if you need to....
Bill
Go to key on engine on.
If you have the MEMORY feature, set all your settings HVAC, Radio, seat etc... that you can control to what you want them to remain at. Make sure that you set the level and air circulation modes to the desired settings. If I remember correctly the defrost heat setting is the default setting that it goes to when the battery is disconnected.
Then press and HOLD the MEMORY #1 button on the drivers door until the little light blinks. Now all of those settings are memorized to MEM1 If it were me, Ide also do MEM #2 also so you don't hit it one day and have a similar issue.
You have to re sync the FOBs to the car also so they select the correct memory settings. If the FOBs don't work, just press and hold LOCK and UN LOCK at the same time till the horn beeps. Then the FOB is resynced to the car. If that doesn't work, you will need to RE LEARN the FOB/FOBs to the car.
PS,,,,,, All of this is explained in the OWNERS MANUAL You can find it on line if you need to....
Bill
Last edited by 10thumper; Oct 3, 2020 at 05:35 AM.
Melting Slicks
Joined: Nov 2014
Posts: 3,399
Likes: 1,339
From: Havre de Grace Maryland
Interesting, I replaced the 2 batteries in my C5 in 6 years of ownership and never had any of the issues after replacement that OP has. But then I have chosen the Manual Mode for Climate Control Options.
