GolfGTIforum.co.uk
Model specific boards => Golf mk7 => Topic started by: nigeldodd on 14 March 2018, 13:49
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How does the car know which key is in the ignition? The metal parts look identical. Does it handshake with the electronics?
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Yep there’s a transponder chip inside (I think it used to be the vw badge on the key, but I am gullible 😉)
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So, is it the transponder that provides the real security as opposed to the mechanical profile of the metal part of the key?
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Yes transponder is the security part. I needed a spare key for another VW.
I bought a key blade and had that cut and then bought a seperate key body with transponder inside.
It was unable to start the car until the transponder was programmed to match the car with Vagcom, VCDS etc...
The key worked perfectly for years in my ownership.
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You can't code keys with vcds since the MK4 or possibly the mk5.
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The two keys you have (on a mk7.5) can be assigned to different driver profiles, which have different settings for all sorts of things from bluetooth pairing, to radio presets to various vehicle settings.
The keys have different codes on the transponder, which the car reads when you use it to start the car.
Common old tech on other marques, quite new to Golfs.
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How new is new? It used to do this on mk 4 golfs about 20 years ago.
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I didn't have it I think on the Mk7?
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You will have Fred. Change how the doors open with the fob ie open all or just one and then try with the other key, it'll work differently. Any changes you do with one key won't affect the other key.
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Ah ok, you just get named driver profiles now which you can alter without having to use the other key...
You can also have more profiles than keys and manually select them (prompted at start up)
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Off on a tangent, the car I scrappaged (new verb) for the Golf7.5gtipp, was a yr 2000 E class Mercedes. The key didn't have a mechanical metal bit, just the transponder, and it had a far better feel when you put it in the ignition hole because there was no single point hinge as there is in the vw. Also the key was lighter and it used an induction coil to recharge the battery. When you put it in and turned it there was the sound of a heavy bolt being drawn back.
In my imaginary fantasy of one of those parties where you throw your car keys on the table, I wonder which of those keys would buy the bigger Kudos.
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Is it not making up for other deficiencies elsewhere? :whistle: :whistle:
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Are we talking about Mercedes rust here, or spouse swapping parties?
One is real, the other fantasy.
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Off on a tangent, the car I scrappaged (new verb) for the Golf7.5gtipp, was a yr 2000 E class Mercedes. The key didn't have a mechanical metal bit, just the transponder, and it had a far better feel when you put it in the ignition hole because there was no single point hinge as there is in the vw. Also the key was lighter and it used an induction coil to recharge the battery. When you put it in and turned it there was the sound of a heavy bolt being drawn back.
In my imaginary fantasy of one of those parties where you throw your car keys on the table, I wonder which of those keys would buy the bigger Kudos.
VW CC key is like that with no metal key and when I had a dream about one of thoes party's it was the last key to be picked up but I put that down to diesel gate :whistle: