Using vw golf mk 6 media interface device .Iphone prior to 3.0 upgrade would charge with the media interface device and play all tracks through the car system.Now not being recognised as media device or charging

Did you enable the find my iPhone feature? If so go to Apple's website and you can track your phones location.
Also, try calling the people that were in your meeting. Perhaps one of them saw it.

I am sorry but VW copyrights its material and we have no downloads of wiring diagrams because of that.

My suggestion? Run down to a store like O'Reilly's Auto Parts, and grab a Chilton-Haye's manual. They're great.

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have you reset the immobiliser??

You'll need to remove the spindle, by removing the axleshaft nut, disconnecting the lower ball joint, unbolt the 2 bolts holding on the strut, and the brake caliper, carrier and rotor. You will need to press out the hub, (the part that the lug bolts go into. Then remove the snap ring on both sides of the bearing, and press out the bearing. Reverse for installation.

I think once it is set in the dock, it is a safety issue where it won't let you go through folders until the iPod is taken out of the dock. That is my experience.

Depending on the model you have, there may not be any speakers in the back only covers. I have a 3 door and there are no speakers in the back. There are covers in place but no speakers, if you go into the menu for sound on the head unit and there is a balance option but no fader option then there are no speakers in the rear and you will have to fit some. VW are notoriously tight when it comes to adding in "extras".

there will be a screw behind the rubber this holds the handle in., if the door has not been used much, greaseing the mechanism may solve this