7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery replacement
Leading reported evidence
Replace battery
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Leading evidence: 'Replace battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace battery' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
Replace the battery just like most other vehicles.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When you have the new battery in, then you can reset the windows.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I've been scrolling through some of the forums regarding DIY battery replacements. I have seen some posts about needing codes and having to reprogram things like automatic windows. This is a first for me and I don't want to be stuck in the garage. Can anyone give me some insight on this. 1999 Carrera C2, aftermarket stereo. There is a code handwritten in my manual, but I have no idea if it is for the current radio.
Make sure the windows are rolled up and sunroof is closed.
if you don’t have the factory radio code, which it sounds like you do, you will have to pull the radio and get the serial number in order to get the code.
Since you have an aftermarket radio, most likely no code is necessary.
Replace the battery just like most other vehicles.
No battery programming required lke BMWs and some other modern vehicles
Nothing special about replacing the battery. Do NOT have a battery charger/maintainer plugged into the car. Undo negative cable first, then positive battery cable. Unbolt the battery tray hold down bolt and the hold down plate. Lift out battery and replace. Bolt it down (doesn't need to be super tight), then connect the positive battery cable, then connect the negative battery cable. You may have to re-teach the car some functions, like auto up/down on the windows. I recommend getting an AGM battery, like this (note this picture is rotated!):
For the windows, press the button to lower and then hold the button for 10 seconds. Then press the button to raise the window, continue holding button for 10 seconds. That resets the upper/lower limits and enables the auto up/down function to work. Do for both sides. Same goes for the sunroof.
The learned adaptations for the DME will be reset to default values when you replace the battery. Go for a gentle 30 minute drive after warmup and all will be good.
One more thing, leave the car unlocked, and I always roll down a window enough to reach the inside door pull. When you have the new battery in, then you can reset the windows.
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