How to Change the Rear Brake Pads on a 1989 Audi 200

1. Loosen the rear lug nuts with a ratchet and socket and raise the rear of the vehicle with a floor jack. Slide jack stands under the Audi’s rear cross member and lower the vehicle onto the jack stands. Remove the lug nuts and pull the wheels from the rear hubs.
2. Remove each of the two caliper bolts with a ratchet and socket while holding each bolt’s respective guide pin steady with a combination wrench. Pull the caliper from its bracket and hang it from a nearby suspension component using a bungee strap.
3. Slide the brake pads from the caliper bracket. Remove the two caliper bracket bolts, then pull the caliper bracket from the rear hub.
4. Pull the rotor from the rear hub. If the rotor will not pull off easily, lightly tap the rear of it with a rubber mallet to free it.
5. Inspect the rotor for any defects, including deep grooves, uneven wear, mirrorlike shine or evidence of grinding. If any defects exist, replace the rotor with a new one. Alternatively, if you have access to a micrometer, measure the thickness of the rotor and compare it to its minimum refinishing thickness of 0.335 inches. If it is at least that thick, have a machine shop or auto repair shop resurface the rotor.
6. Slide the original or new rotor onto the rear hub and position the caliper bracket back on the rear hub. Hand-thread the caliper bracket bolts, then tighten them to 48 foot-pounds with a torque wrench and socket.
7. Insert new brake pads into the caliper bracket.
8. Remove the caliper from the bungee strap and find the Allen key-shaped hole in the center of the caliper piston. Using a ratchet, a 6-inch socket extension and an Allen-bit socket, turn the caliper piston clockwise while pushing the piston toward the caliper body until the piston inserts completely into the caliper’s bore.
9. Set the caliper on the bracket and hand-thread new caliper bolts into the caliper. Tighten the caliper bolts to 26 foot-pounds, using a torque wrench and socket, as you use a combination wrench to keep each bolt’s respective guide pin from turning.
10. Repeat steps 2 through 9 to replace the brake pads on the other side of the Audi.
11. Install the wheels back onto the rear hubs and hand-tighten the lug nuts. Raise the 200 off the jack stands, using a floor jack, then remove the jack stands. Lower the Audi to the ground and tighten the lug nuts to 90 foot-pounds with a torque wrench and socket.
12. Press and release the brake pedal until it feels firm, then check the fluid level in the 200’s master cylinder reservoir. If the fluid level is not at the “Max” line, unscrew the cap from the master cylinder reservoir and add DOT 4 brake fluid until it reaches the “Max” level, then tighten the cap.

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Audi Sunroof DIY

1. Pry off the clear plastic light cover located near the sunroof with a screwdriver inserted at the top corner of the plastic. Add tape around the head of the screwdriver to prevent the plastic cover from getting scratched.
2. Pull at the top of the gray plastic sunroof switch cover located near the light cover and remove it from the Audi.
3. Remove both screws located at the sides of the sunroof knob with a Phillips head screwdriver, turning the screws counterclockwise. Pull out the light unit and let it hang from the wiring.
4. Remove the three Torx screws located on the sunroof knob with a T-9 Torx screwdriver, turning it counterclockwise. Pull off the knob cover to access a green circuit board.
5. Pull off the green circuit board and let it hang by the wiring, exposing two thin metal pieces raised slightly upwards.
6. Bend and raise the metal pieces to make them stand up more to get a better connection to the switch.
7. Repeat the above steps in reverse to reattach all the components that were removed. When reassembling the sunroof knob, check if the sunroof buttons click. If not, continue to adjust the thin metal pieces until the buttons click. You must do this in order for the sunroof switch to function properly.

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How to Change Audi TT Transmission Fluid

1. Drive the car for about 10 minutes to warm up the fluid and make it easier to drain it completely. Park the car on a level surface, set the parking brake and use the jack to jack the front of the car off of the ground.
2. Crawl underneath of the engine compartment and locate the large, square transmission pan right next to the car's driveshaft. On the center of the bottom of the transmission pan is the drain plug. Use the Audi bit mounted in the socket wrench to remove the plug.
3. Allow all of the transmission fluid to drain into the drain pan, then replace the drain plug. On the driver's side corner of the transmission will be the transmission fill hole. Remove the plug filling the hole with the Audi bit and then insert the plastic tube from the fluid pump into the hole.
4. Pump 3 qt. of oil into the transmission and then replace the filler hole plug. Lower the car off of the jack and test drive it.

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How to Install a Dual Exhaust on an Audi TT

1. Spray the bolts that hold the clamps together on the exhaust with WD-40 to loosen them so they are easily removed later.
2. Park your car on rear stands and put it in 'Park.' Let your engine and exhaust cool completely. This might take as long as 20 minutes. Pop the hood and disconnect the negative cable from the battery terminal.
3. Loosen the two bolts on the clamp that holds the exhaust system, using a socket wrench with a 17 millimeter socket attachment. Open the clamps so they are loosened.
4. Use a big flat-head screwdriver to pry the grommet off of the center hanger of the exhaust. Afterwards, attach a 13 millimeter socket to the socket wrench and unbolt the two brackets that hold the muffler in place. When the brackets have been unbolted, the weight of the exhaust system will be connected to one hanger still.
5. Rotate the muffler slightly back and forth to verify that the compression coupler is loose. You might need to loosen the clamps more if the pipe is not moving. If the pipe is still stuck, you can tap it with a hammer on the clamp area to move it loose.
6. Use a big flat-head screwdriver to remove the last hangar that is holding the exhaust system. Prepare to hold the exhaust as you guide it down out of the car. Make sure the exhaust system does not rest on the catalytic converter, or it can become damaged.
7. Bend the brackets of the exhaust system if needed to help support the exhaust in the cutouts of the bumper.
8. Take the stock brackets off the stock exhaust. Put the dual exhaust system into place where the old exhaust was, then re-attach the compression coupler. Re-attach the rear hanger to hold the muffler into place.
9. Re-attach the brackets, then tighten the bolts to secure the dual exhaust into place.

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How do I Change the Headlights on a 2002 Audi A6?

1. Pop the hood of the Audi and remove both T25 screws on top of the Audi's headlights, with a T25 Torx driver.
2. Loosen but do not remove the two T25 screws located at the sides of the headlights using your Torx driver. Connect the T25 driver with an extension piece to access the screws.
3. Slide out the Audi's headlights and pull the metal clips found at the back of the headlights to detach the wiring and to completely detach the headlights from the Audi.
4. Repeat the steps in reverse with the new headlights.

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How to Add Navigation to a Mercedes

1. Push the suction cup, supplied with the GPS device, against the windshield where you want to mount the unit. Flick the suction cup's lever to secure it against the windshield.
2. Locate the ball of the suction cup and push the GPS unit's cradle onto it.
3. Insert one end of the unit's power cable into the GPS unit. Insert the other end into the power outlet on your Mercedes.
4. Push the bottom of the GPS unit into the cradle and tilt the top until it clicks into place.
5. Start your Mercedes vehicle. The GPS unit will automatically acquire the signal and is ready to use.

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How do I Access the Battery on a Mercedes E300D?

1. Locate the interior hood release lever located below the dash on the driver's side of the car. Pull the release lever toward you to release the hood latch.
2. Move to the front of the Mercedes E300D. Notice that the hood is slightly open. Place your fingers in the gap between the hood and grill to feel for the secondary hood release. When you locate it, use your fingers to lift up on the lever while simultaneously raising the hood.
3. Locate the battery on the passenger's side of the car, near the firewall. Slide the covers off the terminals in the direction indicated by the arrows to access the battery for jumping or charging.

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How to Remove the Dashboard on a 1983 Mercedes

1. Enter the driver's seat of your Mercedes and pull the lever on the lower left hand side of the seat which opens the hood.
2. Disconnect the battery. Walk to the front of your Mercedes and fully open the hood. Locate the battery. Use the wrench to remove the bolt clamp from the negative battery terminal. Lift the negative cable away from the terminal.
3. Remove the glove box. Go to the driver's side and open the glove box. Use the Phillips screwdriver to remove the two screws attached to the glove box. Lift the box out of the dash.
4. Remove the rest of the screws on the lower dash panels. Remove the lower panels from the vehicle.
5. Unclip the face plate from the front of the dash with your hands.
6. Remove the mounting screws attached to the radio and slide the radio and its bracket from the dash.
7. Remove the instrument cluster. Unscrew the rubber bezel from around the instrument cluster. Remove the screws which fix the cluster to the dash. Unhook the electrical connector from the rear of the cluster and then remove the unit from the vehicle.
8. Locate the rest of the screws on the upper dash and remove them one by one.
9. Lift each of the remaining panels from the vehicle to complete the process.

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How to Modify the Audi S6 Airbox

1. Remove the air box from your S6 by using the sets of metric wrenches and sockets. Depending on the year of your S6, the specific removal process will vary slightly. The air box is a rectangular plastic piece located on the driver's side of the engine bay towards the front of the car. It is attached to the intake manifold on the engine.
2. Disassemble the air box by removing the top piece from the assembly. This is typically secured onto the air box by plastic clips which can be pried up to loosen the cover from the rest of the assembly.
3. Remove the air filter from the air box by sliding it out, then set the disassembled air box aside.
4. Drill a series of small holes into the bottom of your air box assembly. Space them approximately 1 inch apart from each other. Each hole should not exceed more than approximately 1/2 inch in diameter. These holes will ultimately increase the volume of air that can be drawn into the air box.
5. Reassemble your air box and reattach it to the engine's intake manifold to complete the modification procedure.

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How to Troubleshoot a Mercedes 430S

1. Locate the OBD port on the Mercedes. Look under the driver-side dash, under the steering column. Lift the flap covering the OBD port.
2. Plug the OBD tool into the port. Put the key in the ignition and turn the vehicle to the 'Start' position.
3. Wait until the OBD tool reads the vehicle trouble code. This code will be on the front of the OBD tool, on the small screen. Check the OBD manual for the meaning of the code that appeared on the screen.
4. Note the error code that you were given on the OBD tool and go to a certified mechanic or parts store, which can further advise you of what steps need to be taken to repair the Mercedes.

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