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YOUR RESEARCHPorsche 996 C4S engine/trunk compartment swith not working
Reported or suspected cause
actuator
Reported cause
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1
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0
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0
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Porsche 996 C4S engine/trunk compartment swith not working
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Leading evidence: 'actuator' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'actuator' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Adjust front latch mechanism, spray some white lithium grease' (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 performed work without a confirmed outcome
1
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Porsche 996 C4S engine/trunk compartment swith not working
Replace struts and have had no issues
Performed · outcome unconfirmed
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0
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0
Unsuccessful attempts
1
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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 performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Porsche 996 C4S engine/trunk compartment swith not working
Test battery
Performed · outcome unconfirmed
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 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.
Porsche 996 C4S engine/trunk compartment swith not working
Adjust front latch mechanism, spray some white lithium grease
Suggestion or failed attempt
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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.
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Suggestion
Before trying to adjust the front latch mechanism, spray some white lithium grease on it.
Porsche 996 C4S engine/trunk compartment swith not working
Use appropriate switch, if helper can popup hood
No successful repair reported for this finding.
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Discussions that contain suggestions
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Suggestion
If this is true, find a helper to lift up on the frunk/engine hood while using the appropriate switch, if helper can popup hood then probably an adjustment issue.
Porsche 996 C4S engine/trunk compartment swith not working
adjustment issue
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
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Discussions that suspect a cause
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
If this is true, find a helper to lift up on the frunk/engine hood while using the appropriate switch, if helper can popup hood then probably an adjustment issue.
Porsche 996 C4S engine/trunk compartment swith not working
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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.
16 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 · 1 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi guys,
This is my first post here on the forum, Ive read the rules and I hope this is okay for a first post!
The car is a 996 C4S with 90k miles on it.
To make a long story short I would like to find some procedures and step by step of what to do with a engine/luggage compartment switch that's not working.
I already downloaded the service manual, I actually use the safety cable to open both lids but now I want to solve this intermittent problem.
Sometime the switch will work, sometimes not.
Doesnt matter if the engine is hot or cold.
battery is fine.
Is there an easy way to check if either the switch or relay is faulty?
I do own a multimeter but I would like more precisions on how to test the switch.
Should I try to clean the connectors with isopropilic alcool or a similar product?
Also do you guys have a place to source this kind of part other ebay?
I looked for a fair amount of time but the solution I found are mostly when the battery is dead and how to use the emergency cable to open the lids, which is already what Im doing.
Thanks for your help!
Do the frunk and engine compartment lids stay open when you raise them up or are the struts failing? I had a similar issue with my C4S engine compartment release seemingly not working but found I had failing struts that would not raise the lid enough when I hit the release button. I replaced the struts and have had no issues.
Os: Most any post is ok as a first post. Welcome. Year of car is always valuable when asking for help. Guess that it is a -2 car with electric hood releases, I have read that is is possible the junk/dirt/ debris can get into the switch area and might mess with the functioning. Read once that you can clean this area/switches/connections with an electrical cleaner after removing the sill cover and correct similar problems. Might want to give it a try since it is an occasional problem as opposed to a "never works" situation. I'll try to find this procedure.
Hi!
thank you for your reply.
Unfortunately they both seems to work okay...
When the switch doesnt work I cant hear the 'clic' noise it does when opening.
On the other hand, on a good day both lid will open no problem...
Anybody else have exprienced this kind of intermittent problem with this switch?
Year of car?
So even when the buttons don't work you can hear the frunk/hood actuators click? If so, that could be an adjustment issue, but strange it would be on both ends...
Hi!
Sorry I was sure I included the year of car in my first post... You are right we are talking about a 2002 996 C4S.
Perfect I will give it a try even if everything seems to be clean there might be some debris or humidity trapped somewhere.
What about the "can you hear the actuator clicking even when the hoods don't open" question??? If this is true, find a helper to lift up on the frunk/engine hood while using the appropriate switch, if helper can popup hood then probably an adjustment issue.
As for cleaning these buttons seems to be corrosion sensitive with moisture.
Hi!
thanks for your reply!
Just got the car back today.
Send it to the garage for new tires and alignment.
I had some time on time and I did some test.
I defenately can hear a click if I press on the trunk lid.
It wont open even if a partner try to lift it. On the other hand the engine lid seems to work perfectly.
So I think you're right its probably a matter of adjustment/lubrification of the mechanism.
Do you have a working procedure for trunk lid latch adjustment?
When closing the trunk lid it defenately feel 'tight' so I have to press hard on it to lock it down.
No visual damage to the latch or anything.
Thanks again
Hugo
Before trying to adjust the front latch mechanism, spray some white lithium grease on it. Second, there are two adjustable rubber bumpers on the hood (look, you will see them on either side), make sure they are screwed in (yes, they screw in and out for adjustment). Turn them right to screw them in a bit and see if that takes some of the pressure off when closing the frunk lid.
I had a similar problem with my 04 c2 . It would click but intermittently not open . It turned out to be a failing actuator . These are cheap and takes about 5 mins to change .
Hi
thanks again everyone
I tried lithium grease + screw in the rubber bumpers and it worked...
only one time but might be the right path!
I tested the battery:
While the engine is running the multimeter will show 14v but when I shut off the car the battery is drained to 12.6v and stay stable there for hours.
is it something normal?
I didnt try to unplug the battery so I still have to figure out if its the battery who dont keep its charge or something that is draining the battery.
Hi guys
Sorry to bring back this old thread but I just want to have a confirmation on the P/N for the
engine lid actuator
:
99651205500
Is this the right part for a 2002 C4S?
I also can't really find a procedure on how to change the part / location. Im trying to understand how to change it without having the car in front of me...
This is a source reference. Confirm exact model applicability in the original material.
