Cars Specification

1. Open the hood of your Mercedes and locate the mass air flow (MAF) sensor, mostly found between the air cleaner box and the air intake pipe of more modernized engines.
2. Unfasten all of the clamps that hold the air filter box to the intake hose and disconnect completely. Remove the air filter inside and thoroughly clean this area of any dirt that may have built-up over the extensive use of your Mercedes. This step is not imperative to removing and replacing the MAF sensor, but it will certainly help improve the functionality of the new sensor once installed. Replace the air filter if necessary, but leave the air box disconnected at this time.
3. Use the necessary socket to remove the bolt that holds the clamp of the air intake pipe. Remove this piece to free the intake pipe.
4. Pinch both sides of the MAF sensor and wiggle free until you have completely removed this part from the engine. Be patient, as this may take a few moments of your time to loosen.
5. Compare the old MAF sensor that you just removed with its replacement counterpart. Make sure both sensors match identically and replace the new MAF sensor exactly as the new one was removed. It should slide on very easily, with little wiggling to set into place.
6. Reconnect all of the parts that were removed to access the MAF sensor and clean the air filter box. Make sure all bolts are tightened properly to hold the intended clamps together, ensuring that the air intake tube and air filter box both are set exactly as they were before removal and installation of the MAF sensor.

1. Purchase the appropriate replacement dipstick for your vehicle. You can acquire a factory replacement at your nearest dealer, or an aftermarket equivalent at any auto parts store.
2. Turn your engine off and open the hood. Put on your gloves, then remove the old dipstick from your engine. If the handle is broken, use a pair of pliers to carefully pull it out.
3. Insert the new dipstick into the dipstick funnel. Close the hood.

1. Park the car on level ground. Engage the parking brake and disconnect the negative battery cable.
2. Open the trunk and remove the corner side panel trim from the rear of the vehicle. Disconnect the wiring modules from the tail lights. Remove the assemblies from the vehicle to access the rear bumper mounting screws.
3. Remove the two screws mounting the bumper cover on each side. Disconnect the electrical module for the backup sensors (if equipped) located on the drivers side, below the tail light assembly cavity.
4. Remove the lower mounts below the rear bumper. Detach the clips from each side of the bumper.
5. Support the bumper on one side and have an assistant support the other side. Pop the bumper cover off. Be careful not to damage the clips.

1. Open the hood. Detach the negative battery terminal with a wrench.
2. Locate the cowl trim around the edges of the instrument cluster. Use a Phillips screwdriver to remove the two screws that secure the cowl. Lift the cowl away from the instrument cluster.
3. Remove the three mounting screws attached to the cluster. Unhook the electrical connectors from the back of the cluster. Slide the cluster out of the dash and place it on a flat work surface.
4. Unscrew the broken bulbs in a counterclockwise direction. Discard the broken bulbs. Install the new bulbs by turning them in the opposite direction.
5. To reinstall the cluster or install a new one, simply follow the removal steps in reverse. Reattach the negative battery cable and turn on the engine to test the indicator bulbs in the instrument cluster.

1. Unlock the doors of the Audi. If the doors are locked, the tank flap will not open.
2. Flip open the gas tank flap.
3. Turn the circular tank cap counterclockwise. The cap is located underneath the tank flap.
4. Remove the tank cap from the Audi.
5. Hook the tank cap at the top of the flap to prevent the cap from getting misplaced.
6. Pump fuel into the gas tank of the Audi.

1. Open the hood and disconnect both battery cables. Wait at least 10 minutes before you begin work inside the car. This allows residual electricity in the system, which can cause an accidental inflation of the airbag, to dissipate.
2. Open the glove box. Remove the airbag connector cover on the top-front of the glove compartment, and then disconnect the wiring harness.
3. Use a socket to remove the nut that connects the dash side lower finisher, which is the plastic piece on the side of the dashboard. Insert a small flat screwdriver into the seam between the dash top and the side finisher. To avoid scratches, place a soft cloth over the tip of the screwdriver. Gently pry the panel to release the two metal clips.
4. Remove the drivers side lower instrument panel. This is the panel below the steering wheel that attaches to the center console. Use a Phillips screwdriver to remove the screw on each side. Insert a flat screwdriver into the seam at the top of the panel, and then gently pry it of. There are three metal clips you must release along the top, and two plastic tabs on the right side that pull straight out.
5. Remove the shifter finisher. This is the piece that fits around the gearshift. Pry off the two metal clips on each side of the shifter finisher with a flat screwdriver. When the piece is out of the console, disconnect the wiring harness from the rear of the cigarette lighter.
6. Remove the glove box. There are two Phillips screws along the bottom of the bracket, and one screw in the top-left corner of the bracket. There is also a single metal clip on the right side that you should be able to release as you remove the glove box assembly.
7. Remove both instrument stay covers. These are the plastic pieces on the bottom left and right sides of the center instrument cluster, close to the cigarette lighter and ashtray. There is a single screw on the side of the panel closest to the front of the vehicle, near the bottom. There is a single metal clip on the opposite side of the screw. Use a flat screwdriver to pry the clip out, if necessary.
8. Remove the screws from the center console. There are two screws in the front, one on each side of the gearshift, one screw inside the console box (which you can access with the arm rest/console lid open) and one on each side of the console, near the rear. You can now lift the console off of the vehicles floor.

1. Put the key into the ignition and turn the switch to the on position.
2. Watch for the airbag light to turn on. It will stay illuminated for seven seconds and then shut itself off. After it shuts off, immediately turn the switch off and wait three seconds.
3. Repeat Steps 1 and 2 two more times.
4. Start the engine. The SRS light should come on for seven seconds, and then shut off and stay off. The airbag light has been reset.

1. Park the Audi on level ground.
2. Lift the front portion of the Audi using a jack and rest it on axle stands.
3. Remove the two screws from the wheel wells and the six screws from the Audis underpan by turning a screwdriver counterclockwise.
4. Take off the two lower grilles and the bolts found near the Audis fog lights by turning an Allen wrench counterclockwise.
5. Grab and remove the Audis headlight washer hose, found by the drivers side lower grille. Put a bucket under the Audis front bumper to collect any fluid that will drain out.
6. Jerk the front bumper from the Audi in an upward, then downward motion to remove it. Grab and take off the horn and headlight wiring and turn signal bulbs on either side of the Audis front end.
7. Remove all three drivers side headlight screws and the four passengers side headlight screws found under the headlights by turning a T45 Torx screwdriver counterclockwise.
8. Take off the two screws found above the headlights and the two screws found at the sides of the headlights by turning a T30 Torx screwdriver counterclockwise.
9. Grab and take off the lock carrier from the Audis fan, as well as the wiring and timing belt cover, then unscrew all four bolts from the fan by turning an Allen wrench counterclockwise. Slide the fan away from the Audi.
10. Loosen the two A/C compressor bolts to take off the A/C compressor belt and jerk the spring-loaded tensioner found by the fan using a crescent wrench to reveal and remove the Audis serpentine belt.
11. Take off the damper pulley from below the Audis fan by unscrewing its four bolts counterclockwise using a metric wrench. Hold the damper pulley with a breaker bar. Remove the lower timing belt cover by unscrewing its three bolts.
12. Turn the damper pulley crank clockwise to line up the cam sprocket and valve cover with their marked sides. Then unscrew the three bolts that hold in the tensioner and the bolt that holds in the guide pulley. Install a new tensioner to the guide pulley. A tensioner and a new timing belt can be purchased with a timing belt kit from most auto parts shops.
13. Unscrew the guide pulleys bolt from its brass-colored portion, take off the timing belt, then place a new timing belt at the Audis sprockets. Assemble the guide pulley with an Allen wrench, then take out the new tensioners pin using your fingers.
14. Install all of the Audis components back in their places by performing these steps in reverse. Remove the axle stands from the Audi to lower the vehicle.

1. Disconnect the negative battery cable with the socket wrenches and crawl under the car near the rear bumper to locate the gas tank. Find the gas line running from the front of the gas tank toward the front of the car and disconnect it with the pliers and screwdriver.
2. Use the socket wrenches to remove the mounting bolts on the straps securing the tank to the bottom of the car. Place the jack beneath the tank and lower it down slowly.
3. Use the screwdriver to remove the screws in the fuel pump mount on top of the gas tank, then use the pliers to pull the tubes off of the ends of the fuel pump.
4. Slide the gas lines onto the proper fittings of the new fuel pump, slide the pump back into the mount, and then tighten down the mounting screws with the screwdriver.
5. Raise the tank back up into the mounting straps and resecure the bolts. Slide the gas line back onto the gas tank and start the car up to make sure the pump is connected properly.

1. Put both European release keys into the slots, at both sides of the CD stereo. Each key is designed with two ends that fit into two slots. There are four slots on the stereo, two slots for each key.
2. Pull out both European release keys towards you to unlock the CD stereo and pull out the CD stereo from the Audis center console.
3. Pull the aerial and ISO wiring out from the back of the Audis CD stereo.

1. Drive the vehicle for ten minutes and then place it in park on a level area. Check the automatic transmission fluid prior to completing the oil change since its best to check and add transmission fluid at operating temperature.
2. Locate the reservoir and dipstick labeled ATF. It will be found opposite of the regular motor oil, on the driver side of the vehicle and is colored red.
3. Remove the dipstick from the reservoir and wipe it clean with a rag. Replace the dipstick completely and remove it once more. This will give you an accurate reading of the transmission fluid. If the measurement reads full do not add any fluid at this time as over filling can cause damage to the transmission. If the measurement reads between the full and add lines or below the add lines, then add fluid.
4. Place a funnel into the reservoir neck where the dipstick normally sits. Pour a small amount of transmission fluid into the reservoir and allow it to funnel down completely. Check the transmission fluid levels again by removing the funnel and replacing the dipstick completely.
5. Remove the dipstick and read the measurement. Add more fluid, if needed. Continue this process until the measurement reads full. Once finished, proceed to the oil change, as the components and oil will now be cool enough to complete the oil change.

1. Disconnect the cable running to the negative battery terminal. Loosen the nut on the cable clamp running to the negative battery terminal with a socket wrench and slide the clamp off the terminal.
2. Open the hood and look straight at the front of the engine. You will see a belt that snakes through a system of pulleys. This is the the serpentine belt, also called a drive belt. It needs to be removed in order to remove the alternator. Draw a diagram of the belt path and orientation. You will need this diagram when reinstalling the belt.
3. Remove tension on the drive belt with a socket wrench and a 14mm socket. The tensioner is on the drivers side of the engine, near the front of the engine. The tensioner bolt protrudes out of the engines pulley system at a 45 degree angle, with a little bit of a hex shape at the top of the bolt and a small hole in the middle of the bolt. Turn the bolt counterclockwise to remove tension on the belt.
4. Pull the belt off the pulley system.
5. Remove the electrical connector running to the alternator.
6. Remove the alternator. Remove the upper and lower alternator mounting bolts. The alternator is mounted on the front of the engine.
7. Install the new alternator. Installation is the reverse of removal. Make sure that you orient the drive belt properly when installing it.
8. Attempt to start the engine. As long as the battery was not drained entirely when the alternator failed, you should be able to start the engine. If the battery is dead, you may need to install a new battery. To do this, remove the cable clamps on the battery terminals following the procedure in Step 1. This time, youll be removing both the positive and negative cables. Always remove the negative cable first and attach it last. Once the cable clamps have been removed from the terminal, remove the battery from the battery holder and drop in a new battery. Then, reconnect the battery terminals and tighten the cable clamps.
9. Check to make sure that the battery light does not stay on once the Mercedes is running.

1. Connect the iPod or iPhone to the BMWs stereo via a cassette tape adapter, if the vehicle has a tape deck. Place the tape portion of the adapter in the stereo, and insert the other end into the headphone jack of the device. It will play through the stereo via the tape deck.
2. Broadcast the signal from the iPod or iPhone via an FM transmitter. The transmitter allows you to basically pirate an empty FM radio station (one with plenty of static, not being used for an actual broadcast in your area) by beaming the iPods output to your car antenna, which it would play over your BMWs stereo. They cost between $20 and $100, as of 2010, depending on the features and quality.
3. Install an auxiliary input cable in the back of the BMWs stereo. If you do not have extensive knowledge of how to service a car stereo, you should have this done by a professional. The cable would be run from the stereo into the cabin of the BMW, allowing you to plug it into the iPod or iPhone whenever you desire to listen. The sound quality is unparalleled in the realm of iPod-to-car-stereo connections.

1. Pop the hood and disconnect the Audis battery. This will disable the airbag light, preventing it from lighting up when the seats are being removed.
2. Use a flat-head screwdriver to remove the plastic caps off all four bolts found around the Audis seat. Then, remove all four bolts with an Allen wrench, connected to an L-shaped tire iron, in a counterclockwise motion.
3. Unclip the seat heaters and the airbag sensors that are found under the Audis seat. If the seat heaters and airbag sensors are hard to see, use a flashlight.
4. Pull up and remove the seat away from the Audi.
5. Place the new seat onto the location which the stock seat was removed, and place and clip on the seat heaters and airbag sensors from underneath the seat.
6. Use an Allen wrench to attach the four bolts that were removed to the new seat, connected to an L-shaped tire iron, in a counterclockwise motion, and place the plastic caps onto the bolts.
7. Reconnect the battery and close the hood.