How do i remove a tail light on a 2008 Passat?

I think you must turn it on through the main light switch, refer to the owners manual.

Remove the two 10 mm (head) bolts that hold the stop light. This bolts are between the tail light assembly and the tail gate weatherstrip. You can see them without having to remove anything.

By using a masking tape wrapped flat screwdriver, pry "back" the whole tail light assembly. Once out, you can twist the brake light (or reverse, or turn signal) bulb plug, remove and replace the bulb.

The Getz uses standard two filament brake globes (1/4 turn to install).

On the 2001 Volkswagen Passat, there is one reverse tail light (bulb) per side for a total of two reverse tail lights. The following link shows the inside of the 2001 Volkswagen Passat tail light.
Link to 2001 Volkswagen Passat Image

no it cant ,remove the stereo

It is not possible to have that reset or turned off "Service now!" without using a diagnostic scantool connected to the data link connector of the car. This is the only one way to reset service due light on a 2008 Volkswagen Passat.

what i would do is contact a volkswagon dealer and see if they have a trailer kit. with instructions. or ask if they can do it

There is an axcess inside your trunk directly behind the tail light. You may have to remove you trunk carpet first.

you will need to remove both rear tail lights remove the screws on top and under bottom and in the fender wells there will be a lot of screws when you get done

Rear Turn Signal, Brake and Parking Lights Removal & Installation To Remove

1. Remove or disconnect the following:
   • Harness connector
   • Combination nuts
   • Lamp and its assembly toward rear

To Install:

1. Install or connect the following:
   • Lamp and its assembly into position
   • Combination nuts; torque to 35 lb-in. (4 Nm)
   • Harness connector

This is the only thing the tech manual says.

There is no any swithch on transmission. There is only one cord, on a top of trnsmission, try to see is that cord good, cause i has the same problem, whan i had a passat. the problem was in that cord exactly.