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Discussion summary
YOUR RESEARCHWhat is this Knob on my C4S?
Leading reported evidence
Replace position in other pictures i've seen of the car
Performed · outcome unconfirmed
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0
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1
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Performed · outcome unconfirmed · Original poster
I'm pretty sure it's the nav antenna, and that it is held on magnetically, as it has changed position in other pictures I've seen of the car.
Leading evidence: 'Replace position in other pictures i've seen of the car' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace position in other pictures i've seen of the car' (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
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
PM me and I will send you the insructions I used for the installation.
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25 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Here's a picture from the dealer (it's been picked up by the auto transporter today and is on its way to Canada now- yay!) What exactly is that little **** right below the third brake light above the spoiler?? I haven't been able to find out anything about it. I'm pretty sure it's supposed to be there, just not sure what it does.
I'm pretty sure it's the nav antenna, and that it is held on magnetically, as it has changed position in other pictures I've seen of the car.
BTW, I was actually pretty happy to find out that my car had an aftermarket stereo, nav, and amp, as I understand that Porsche's stereos are generally not great. My car once had a CDR23, but it now has an AVIC Z3 with GPS, bluetooth, etc. - I'd call this a good upgrade.
You must have the manual spoiler. It's a rare, lightweight RS option. If you're going to be driving over 70, pull over and turn it until the spoiler raises.
You might want to think about changing the title of the thread....SOMEONE is going to suggest that it might be 'you'...
Looking forward to seeing you in Steer City!
LOL!
Well, thank you for the astute observation! The plastic wrap is there as the car was being detailed at the dealer, and is either (i) to keep the wax out of the little corners, or (ii) to protect the badging/lettering during the 1,200 mile journey to where I live...
Center forward of the dash is the factory location. Not an easy place to work, unless the windshield is removed. Otherwise, bend things, lose screws in the A/C system, and curse.
I installed traffic-pro single DIN Nav in my 02 C4S and the antenna will mount under the plastic enclosure on the dash center where the light sensor and alrm LED are located. PM me and I will send you the insructions I used for the installation. In your case, they have actually drilled a hole in the area for the antenna to route thru the engine compartment, so you might want to decide what your preference is as far locatiion if there is drilled hole ;-(
GoodLuck with the new car!! The C4S has been a great car for me!!
Demosan
That is a GPS unit. We put them on big rigs so the trucking company can find the location of the truck at any time. Somone Sir, is watching you.
Accurate to with in a 3 meters.
Wife maybe?
Yep yep, there is a DIY PCM2 retrofit thread on renntech.org. It took me a very lazy 3 hours to retrofit the PCM2. Routing the gps antenna to that location took me only 30 min.
/m
My GPS antenna is under the plastic cowl @ front windshield. Along with the Sirius antenna. Easy to route to the head unit and invisible. May want to look into it. Nice flat mounting spot easily accessible from under the front bonnet. Remove the plastic battery covers and you'll see. Just behind and to the passenger side of the battery.
