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Rennlist

Key Remote not working

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Original source
10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHKey Remote not working

Leading reported evidence

Replace battery again and it worked fine

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

I replaced the battery AGAIN and it worked fine for about a day...then the same thing.

Key Remote not working

Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Read full discussion summary

Leading evidence: 'Replace battery again and it worked fine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace battery again and it worked fine' (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.

Read captured replies

1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Replace battery in the key

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

I figured that the battery was near dead, so I replaced the battery in the key, and then the remote operation worked fine - for about a day.

Key Remote not working

Use alchol

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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

Use alchol to clean the inside of the key and the electronics (minus battery of course).

Key Remote not working

Use different frequency

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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

Some other countries use a different frequency.

Key Remote not working
Frequently discussed actions (4)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace battery again and it worked fine

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

I replaced the battery AGAIN and it worked fine for about a day...then the same thing.

Key Remote not working

Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Replace battery in the key

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

I figured that the battery was near dead, so I replaced the battery in the key, and then the remote operation worked fine - for about a day.

Key Remote not working

Use alchol

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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

Use alchol to clean the inside of the key and the electronics (minus battery of course).

Key Remote not working

Use different frequency

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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

Some other countries use a different frequency.

Key Remote not working
Coverage and how to read this overview

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.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.

2 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

That fixed my issue.

No unique explicit quoted action; no causal link assigned

Generation: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I figured that the battery was near dead, so I replaced the battery in the key, and then the remote operation worked fine - for about a day. Then its operation slowly started deteriorating. After about two weeks, it would take about 30 seconds of pressing and re-pressing that button to get the doors to open. I replaced the battery AGAIN and it worked fine for about a day...then the same thing. What is wrong with this thing? Should I just get a new key? One dealer told me it would be about $150.

POST 2Original post

Dealer quoted me close to 325 when all was said and done. Try this. Take the key housing apart and remove the electronics. Use alchol to clean the inside of the key and the electronics (minus battery of course). That fixed my issue. It was all gummed up inside.

POST 3Original post

I was just going to post something similar to this... I have to get really close to my 04 C4S for the key to work. And sometimes I have to press the key a couple of times before it works. My 2001 C4 keys worked from far away and are still working fine after 3+ years of use.

POST 4 / ORIGINAL POSTEROriginal post

Thanks Tim, I will try that.

POST 5Original post

What I found odd was the first time I just cleaned up the electronics and that helped but not great. Then I looked at the little Red LED thingy on the key itself and it was all dirty and all I could figure is that it was degrading the signal. Cleaned it out and it worked MUCH better.

POST 6 / ORIGINAL POSTEROriginal post

I don't think that the LED has anything to do with the signal. I think it's just an indicator to let you know that it's working. I'll try cleaning that too though. It can't hurt.

POST 7Original post

My understanding is that my 99 is IR not RF activated. Is that right?

POST 8Original post

It is RF. Look at your key and you will see 315 which is the frequency used in the US. Some other countries use a different frequency.

POST 9Original post

I seem to pick up a Latin station on channel 315...................

POST 10Original post

Try this: From far enough away that the key does not work, place the key pointed at your chin from below, and open your mouth, facing the car (I know you will look very strange). Bet you get 25% more distance.

This is a source reference. Confirm exact model applicability in the original material.