Do I have to change the gear oil of VW touareg 2007 model which covered 200000Km

SOURCE: vw polo gear gaiter cover

yes you can replace it its quite easy hun good luck x

SOURCE: 2004 VW Passat engine cover under car hanging

dead right it is ! the cover has not been resecured properly after changing oil +filter if garage says it waslike this on service why not tell you ?? either way take it back and complain this cover is secured by screws and no excuse for not fitting securely

SOURCE: locate oil filter in vw touareg

Oil filter is somewhere beneath the engine.

Buried your head under the car and you will find the oil filter above a cross-brace. There it is easy because there is enough room for you to remove and replace it.

Cheers.

SOURCE: Brake Pad Replacement,2004 VW Touareg,V6 instructions

Same as any other vehicle.

1. Raise and support vehicle
2. Remove tire/wheel
3. Loosen/remove the two caliper bolts
4. Slide caliper off the rotor.
5. Use a C-Clamp to depress the caliper piston
6. Remove old pads from caliper
7. Install new pads on caliper
8. Install caliper/tighten caliper bolts
9. Install tire/wheel
10.Lower vehicle
11 Move to next wheel/repeat

Some people take a turkey baster and remove some of the brake fluid from the master cylinder prior to depressing the caliper piston because it can over flow. If you choose to do that just add the fluid back when finished so it is at its proper level.

SOURCE: Coils need to be replaced and VW Touareg Catalytic Converter

Call around find out. Call at least 3 repair shops to get an estimate.