How to Install a Fuel Pump Relay on a 2002 Audi A4

1. Place the vehicle's transmission in "Park" and turn on the interior lighting. Apply the emergency brake.
2. Look underneath the dashboard and find the fuel pump relay--it’s located next to the steering column, above the pedals.
3. Unplug the fuel pump relay from its connector and discard it. Install the replacement relay.
4. Turn the key to the “On” position and listen as the fuel pump energizes for a 2 to 3 second period. If the fuel pump energizes, then the relay is functioning properly.

Continue lendo

How to Charge the Battery for a 745i BMW

1. Pop the hood and find the battery on the BMW 745i. It's on the right rear side of the engine compartment, along the firewall.
2. Lift off the plastic cover on the battery compartment to expose the battery and connecting terminals.
3. Place the battery charger on the ground by the front left tire.
4. Connect the red (positive) clamp from the battery charger to the red (positive) clamp and post on the car's battery.
5. Connect the black (negative) clamp from the battery charger to the engine block or an unpainted part of the BMW's frame. Clamp it as far away from the battery as the charger cable will reach.
6. Set the battery charger's voltage switch to 12 volts. If it is a 12-volt charger and does not have a voltage switch, skip this step.
7. Set the desired amp rating, which may range from 6 to 30 amps, depending on the model. The higher the amperage, the faster the charge rate of the battery. If the battery charger has only one amp setting and no switch, skip this step.
8. Take the cord from the battery charger and plug it into an outlet.
9. Read the battery charger's manual to find out the appropriate charging time for the battery.
10. Unplug the charger from the outlet once you've reached the desired charging time; then disconnect the charging cables from the BMW.
11. Start the vehicle.

Continue lendo

How to Clean AMG Wheels

Manufacturer's Recommendations
1. Spray the AMG wheel with water from a hose to remove dust and dirt.
2. Spray the entire surface of the wheel in a thin, even layer of a tire cleaning foam. Mercedes Benz recommends using Wheel Care, as it's specially formulated to keep AMG wheels in peak condition. For thick residue or tough stains, allow the cleaner to sit on the tires for five to ten minutes.
3. Wipe the cleaner into the tire with a soft-bristled brush.
4. Rinse the foam from the tire with a hose.
5. Dry the AMG wheels with a towel to prevent water spots.
Homemade Cleaner
6. Spray the AMG wheel with water from a hose to remove dust and dirt.
7. Combine 1/4 cup borax, 1/4 tsp lemon oil, 1/4 tsp vegetable oil-based liquid soap and 1 tsp household bleach in a small bucket. As you mix the ingredients, they will form a paste-like cleaner.
8. Use a soft-bristled cleaning brush or rag to rub the cleaner into the AMG wheels. Allow the paste to dry on the wheels.
9. Spray the wheels with a hose to remove the cleaning residue.
10. Dry the AMG wheels with a towel to prevent water spots.

Continue lendo

How to Read Tire Labels

Passenger Tires
1. Start with the tire name on the outer ring. The next letter you come to after the name will be a “P” for passenger tire. The next three numbers are the width of the tire in millimeters.
2. Read the next number past the slash mark. That will be the ratio of height to width. This is the aspect ratio. The next letter will indicate whether the tire is a radial or not. The next pair of numbers will be the rim diameter code followed by a space and then two letters that represent the load index and an alphabetic speed symbol.
3. Skip the next gap and you will find a temperature rating of “A,” “B,” or “C” and a severe weather rating, if it has one. After these letters will be the name of the manufacturer.
4. Read the last three groups of numbers to determine first tread wear. The higher the number, the longer the tread will last. Next comes traction rating. The rating starts at “AA,” then “A,” then “B,” etc. The higher the rating, the shorter your stopping distance in wet weather. The next number is the temperature grade (A, B or C). The closer to A, the more heat resistance found in the tire.
5. Follow the small letters around the edge of the rims. Starting below the tire name, you will find the maximum permissible inflation pressure followed by the USDOT tire identification number, the tire ply, composition and materials used in manufacturing.
Light Truck
6. Start at the outside ring of numbers with the tire name. The next number group begins with the two letters “LT” for light truck. Again, the next 3 numbers are the width of the tire in millimeters.
7. Find the numbers immediately after the slash mark. This is the aspect ratio (height to width) of the tire. If the tire is a radial it will be followed by an “R,” then the two numbers representing the rim diameter.
8. Continue clockwise around the tire. The next letter represents the load index, followed by a load index and speed symbol. After the next gap is the temperature and any severe snow or weather condition rating it may have. Following the manufacturer's name going clockwise are maximum load weight used as a single- or dua-mounted tire, followed by the tire pressure at which those load weights are correct.
9. Start reading the inside of the two small rings below the tire name. You will find the sidewall cord type, ply and another marking for if its a radial, tubeless or tubed tire.
10. Continue reading the next set of letters going clockwise. This is the USDOT tire identification number followed by the tread cord and ply rating.

Continue lendo

How to Remove an Oxygen Sensor on a Audi A6 4.2

1. Raise the Audi using the jack and set all four corners onto jack stands so that the vehicle is solid and secure. Make sure there is enough room for you to move underneath the car, and double check the car is secure on the stands prior to crawling underneath it.
2. Locate the sensor on the exhaust. This is just behind the catalytic converter on the exhaust, and it has the only electrical connection on the exhaust. Unplug the wiring harness using your hands, and then remove the sensor using the oxygen sensor wrench.
3. Apply a thin layer of the anti-seize compound to the threads of the replacement oxygen sensor using the applicator provided with the anti-seize compound, and be very careful not to get any on the sensor head itself. Screw the replacement sensor into place.
4. Drop the car off of the jack stands using the jack.

Continue lendo

How to Install a Manual Boost Controller on an Audi

1. Mount the boost controller in your interior. Depending on the model of boost controller you've bought, there may or may not be a standard dashboard mount included. A cheap mounting option is Velcro or double-sided tape, both easily obtained at most hardware stores.
2. Using the sockets and open wrenches, remove the plastic air box at the front, driver's side corner of the engine. Unclip the wide hosing that attaches it to the engine's intake manifold and set the air box and hosing aside. Disconnect any wiring harnesses that are attached to sensors in the intake tubing. Removing these components will give you easier access to the turbocharger assembly.
3. Remove the wastegate frequency valve, mounted at the top of the turbo. This valve is plastic, has a U-shape and has two small hoses attached to it that run from the turbo assembly. Pull the hoses out with the valve and set them aside.
4. Mount the boost controller's actuator to the wastegate frequency valve of your Audi. Depending on the model of boost controller that you're working with, the specific mounting process will vary. Fundamentally, you are connecting the actuating mechanism and hosing to the wastegate valve. The boost control device inside the car will electronically dictate the actuation of the wastegate valve and flow of air through the modified hosing.
5. Determine a location for the boost controller's input hose. You can route the input hose into existing hosing that is attached to the turbocharger's inlet.
6. Run the wiring from the actuator through your Audi's firewall, which is the barrier between the interior of the car and the engine. There are multiple small holes in the firewall through which you can snake the wire. Once it is has reached the interior of the car, strip off a bit of insulation from the end and wire it to the boost control device. Insulate this electrical connection with electrical tape.
7. Reinstall the wastegate actuator valve, the air box and intake manifold tubing. Remember to reconnect any sensors that you may have had to disconnect during the installation. Close your hood, then follow the calibration procedure that your boost controller requires before it can be put to use.

Continue lendo

How to Replace a 1999 Mercedes Benz E430 Cabin Air Filter

1. Open the glove compartment and remove all contents.
2. Remove the two screws on the top inside panel of the glove compartment.
3. Remove the two screws from the bottom inside panel of the glove compartment.
4. Pull the glove compartment out of the dash.
5. Pull the cabin filter cover out and up to remove it.
6. Pull the top filter straight out to remove it.
7. Lift the bottom filter up and out to remove it from the filter compartment.
8. Insert the first new filter into the filter compartment. Slide it all the way back until it drops down to allow room for the additional filter.
9. Slide the second new filter into the compartment.
10. Replace the cabin filter compartment cover. Press the cover into place until it snaps closed.
11. Replace the glove compartment. Replace the two screws on the bottom inside panel of the glove compartment. Replace the two screws on the top inside panel of the glove compartment.

Continue lendo

How to Change the Clock on Mercedes ML350

1. Insert your smart key into the ignition module.
2. Press the "Menu" button (left side of your steering wheel) to bring up the Mercedes-Benz menu. Press the "Up" or "Down" arrows (right side of your steering wheel) to browse through the menu options.
3. Stop when the display reads "Settings." Press the "Menu" button to enter the Settings menu.
4. Press the "Up" or "Down" buttons until the message "Time/Date" appears. Press the "Menu" button to enter.
5. Press the "Up" or "Down" buttons to highlight "Clock Set Hour," then press the "Menu" button again.
6. Press the positive (+) or negative (--) button on your steering wheel (right side, beneath arrows) to adjust the hour display. Press the "Menu" button to exit and save your changes.
7. Press the "Up" or "Down" arrows to highlight "Clock Set Minute," then press "Menu" to enter. Press the positive (+) or negative (--) button to adjust the minute display, then press "Menu" to exit.

Continue lendo

How to Change a 410D Fuel Filter

1. Turn off your 410D if it is running. Prop open the hood. Pull back on the battery cover tabs and slide the battery cover out of its mounting slots. Loosen the negative battery terminal nut with a wrench. Disconnect the negative battery cable and set it aside.
2. Put on latex gloves. Clean the area around the hoses on the fuel filter with a rag to prevent dirt from getting into the hoses when you remove them. Note the positions of the hoses on the current filter so that you can reconnect them to the replacement filter in the same manner.
3. Press inward on the hose collar tab with your screwdriver or finger. Slide the collars away from the stems of the fuel filter. Pull the hoses off the fuel filter.
4. Reach down the side of the fuel filter for the spring-loaded clip holding it in place. Press the spring-loaded clip away from the filter to release the filter from the clip. Pull the filter out of the engine bay.
5. Lubricate the stems of the new fuel filter with motor oil. Insert the fuel filter into the fuel filter bracket and secure it in place with the fuel filter clip. Press the hoses onto the stems of the fuel filter in the same pattern that the hoses were connected on the old fuel filter. Secure the hoses to the stems by sliding the collars up the hose onto the portion of the hose that overlaps the fitting.
6. Reconnect the negative battery cable. Start your 410D, let it idle for three seconds and then turn it off. Repeat this process five or six times to prime the fuel system and remove any air that got into the fuel lines while you changed the filter.

Continue lendo

How to Remove BMW Emblems on a R1200C

1. Insert a 1-inch putty knife between the BMW emblem and the fuel tank on the R1200C motorcycle.
2. Gently pry upward around the emblem until it lifts away. Take care not to scratch the finish of your motorcycle. The emblem attaches to the fuel tank with two prongs that fit into two rubber grommets on the fuel tank.
3. Grasp the grommets with needle-nose pliers and pull to remove. Set the grommets aside.

Continue lendo