How to Operate a BMW E46 Folding Top


1. Lower the windows using the electric window control switch. Put the gear shift into 'Park' and set the emergency brake for safety.
2. Grasp the convertible locking handle between the sun visors. Turn it counterclockwise and pull it downward. Inspect the area in front of the gear shift. You will see a button with a convertible top icon. Push it.
3. Step out of the car. Grasp the rear base of the convertible top, beneath the rear glass. Lift it up about 1 foot. Beneath it, you will find the rear cover. Pull the rear cover up and rear-ward to move it out of the way. It is attached to the car by a hinge.
4. Gently pull the front edge of the convertible top rear-ward to fold it into its storage compartment. When it is flat, push the rear cover forward to cover the folded top. Firmly push the cover down to snap it into place.
5. Push the 'Unlock' button in front of the gear shift when you are ready to raise the top. This will unlock the rear cover.
6. Lift the rear cover to expose the folded top. Grasp the rear edge of the top and pull it toward the front of the vehicle to move it to the 'Closed' position. Grasp the rear edge of the top and lift it about 1 foot. Fold the rear cover down, and then push the rear edge of the top back in its place.
7. Turn the locking handle between the visors clockwise and push it upward to lock the convertible top.
8. Some E46 models have an automatic folding top. To operate this top, push the 'Open' button in front of the gear shift to open the top. Push the 'Close' button to close the top. The car must be stationary.
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How to Reset an A4 Odometer


1. Turn the Audi's ignition off.
2. Push on the Audi's trip odometer reset button, which is found at the vehicle's dashboard, above the steering wheel.
3. Turn the Audi's ignition to 'On' while pressing on the trip odometer reset button.
4. Let go of the trip odometer reset button once the Audi's dashboard displays 'Service Oil,' as an indication that the odometer has been reset.
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How to Install a BMW ECU Race Chip


1. Open the glove compartment and remove the screws from the upper cover with a Phillips screwdriver. Pull the upper cover off.
2. Detach the four screws holding the ECU box to the ceiling of the dashboard, using the Phillips screwdriver. Lower the ECU box
3. Release the lever on the ECU plug to remove the unit from the vehicle.
4. Turn the ECU box upside down. Bend out the retaining clips that are holding the cover in place, using a flat-head screwdriver.
5. Turn the ECU box over and remove the cover.
6. Pop off the cover holding the ECU race chip in place, using a flat-head screwdriver. It is located on the bottom right.
7. Pry the ECU chip up slowly with a flat-head screwdriver. Make note of the direction it is installed.
8. Insert the new ECU chip in the same direction as the old ECU chip. Make sure all pins are inserted into their corresponding pin sockets. Pop the ECU chip cover back into place.
9. Replace the cover of the ECU box. Turn it over and bend the retaining clips back into place. Reattach it to the plug. Reattach the box to the ceiling of the dashboard with the four Phillips screws. Replace the upper cover of the glove compartment and close it.
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How to Replace the Front Brake Pads on a 2000 Audi A6


1. Park the Audi on level ground. Turn off the engine, and pull the hood release lever. Move to the front of the A6, and lift the hood. Remove the master cylinder cap, located to the left of the engine, near the back of the engine bay. Remove half of the brake fluid from the reservoir with a poultry baster. Place the master cylinder cap, loosely, onto the container.
2. Loosen the lug nuts on the front wheels, with the tire iron. Place a jack under the frame at the front of the vehicle, and lift the front tires off the ground. Place jack stands under the front axles, and lower the Audi onto the stands. Move the jack out of your way.
3. Remove the tires, and lay them rim-side-up, to avoid scratching the wheels on the ground. Remove the retaining clips on the outside of the calipers, with pliers. Remove the two caliper slide bolts on the inner side of each caliper, with a 12-mm socket and ratchet. Lift the calipers from the caliper brackets, and rest them on top of the steering arm, above the brake.
4. Pry the brake pads on the right wheel hub from the caliper bracket with a flat screwdriver. Spray the bracket slots with brake-parts cleaner, and clean the area with a wire brush and cloth towel.
5. Apply a thin layer of anti-squeal brake compound to the back sides of the new brake pads. Slide the pads into the caliper bracket slots.
6. Place the channel-lock pliers on the caliper piston and the back of the caliper. Squeeze the piston into the side of the caliper, to allow ample space for the new brake pads.
7. Place the caliper back onto the caliper bracket, around the new brake pads. Screw in the two caliper bolts, with the socket and ratchet. Replace the wheel onto the wheel bolts, and screw on the lug nuts.
8. Move to the left brake, and repeat Step 3 through Step 7. Place the left wheel onto the wheel bolts, and screw on the lug nuts. Lift the front of the Audi, with the jack, and remove the jack stands. Lower the front tires, to the ground, and tighten the lug nuts with the tire iron. Move back to the engine compartment.
9. Remove the master cylinder cap, and place a funnel into the reservoir. Add brake fluid, as necessary. Replace the master cylinder cap, and close the hood.
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How to Clean the Brake Light Switch on a BMW


1. Spray the contacts of the BMW brake light switch with an electronic parts cleaner.
2. Scrub the contacts with a steel wool scouring pad to remove any corrosion on them. Do not scrub too hard; you only want to remove the corrosion and bring the contacts to a bright, shiny finish.
3. Spray the contacts with the electronic parts cleaner again. Spray all four contacts liberally, and let the brake light switch air dry.
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How to Change the Transmission Oil in a BMW 528I


1. Start the vehicle and let it run for 10 to 15 minutes so that the various parts in the engine have been thoroughly warmed up. Set the parking brake on the vehicle.
2. Loosen the drain plug on the transmission fluid pan with a wrench and put the draining container underneath the pan. Remove the plug and measure the amount of fluid that drains from the pan. This will be the amount of new fluid that needs to be put in.
3. Remove the transmission fluid pan from the vehicle by loosening the fasteners with a wrench. Remove the gasket and place a small amount of brake cleaner onto a rag. Use it to clean all of the components of the pan.
4. Remove the transmission fluid filter underneath where the fluid pan was, by taking off the attached fasteners with the wrench. Replace the old filter with a new one by re-attaching the fasteners back in their original place.
5. Re-install the fluid pan by refastening it to the vehicle and fill the pan with the same amount of transmission fluid that you removed from the vehicle in the second step. To do so, simply remove the filler plug and pour the fluid in to the necessary level. Replace the filler plug afterward. Be sure to use enhanced Dexron fluid, as mentioned in the BMW Owner's Manual.
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How to Remove a BMW Fog Light


1. Disconnect the ground wire from the BMW's battery. The ground wire is the (usually black) wire that connects the battery to the frame of the vehicle.
2. Locate the fog light access openings. The openings can be found at the upper inside corner of the fog light.
3. Insert the screwdriver into the access opening and pry open the spring-loaded fog light detaining clips. Pushing forward (toward the front of the BMW) will release the clips. The fog light will swing forward along a hinge at the side of the fog light opposite the detaining clips.
4. Pull the fog lights out and away from the hinged side.
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How to Replace a Headlight on a 2005 BMW 325i


High Beams
1. Open the driver's side door and pull the hood release latch towards you. This latch is located next to the door jamb, below the dashboard.
2. Locate the hood release handle below the 'BMW' symbol on the hood. Press the release handle upward and lift the hood. The hood supports itself automatically with a pair of hydraulic lifts.
3. Fold the wire bracket that secures the plastic cover over the headlight assembly and unlock the cover.
4. Open the cover. Remove the bulb by pulling it straight out.
5. Insert a new bulb. Do not touch the glass portion of the bulb with your bare fingers.
6. Close the plastic cover and swing the wire bracket back over the edge of the cover to secure it.
Low Beams
7. Turn the front wheel inward on the side of the vehicle that has the bulb that needs to be replaced. For example, if you need to replace the left headlight, turn the wheels to the right.
8. Locate the plastic flap on the front side of the wheel well. Unlock the flap by turning the two fasteners counterclockwise then open the flap.
9. Fold the wire bracket that secures the plastic light cover over to unlock the cover.
10. Open the cover. Remove the bulb by pulling it straight out.
11. Insert a new bulb. Do not touch the glass portion of the bulb with your bare fingers.
12. Close the plastic cover and swing the wire bracket back over the edge of the cover to secure it.
13. Replace the plastic flap on the front side of the wheel well and secure it by turning the fasteners clockwise.
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How to Replace the Diesel Filter in a Mercedes


1. Lift the hood and locate the transparent pre-filter and main filter assembly. These are on the left side of the engine. The pre-filter is below the fuel injector pump, and the main filter is mounted on the engine block forward of the injector pump. Undo the fuel supply hose connected to the pre-filter with a screwdriver. Pinch off the fuel and plug the hose with a wooden pencil or a golf tee. Loosen the front hose clamp. Remove the pre-filter from the hose and replace it with a new unit. Reconnect the inlet hose and tighten both hose clamps with a screwdriver.
2. Use a 13mm socket wrench with an extension to loosen the two bolts on the bracket holding the main filter assembly to the engine block. This allows better access to the filter can. Remove the hollow center bolt from the top of the filter housing with a socket wrench. Spin the filter can off the filter housing.
3. Replace the lower 'O' ring on the hollow center bolt with the new 'O' ring provided with the filter. Moisten the new filter rubber gasket with diesel. Slip the gasket into the groove on top of the new filter can. Fill the can with clean diesel to speed up the bleeding process described in the next step. Fit the filter can into the upper housing with the arrow on the can pointing toward the injector pump inlet. Insert the hollow center bolt into the top of the filter housing, and tighten it with a socket wrench. Do not damage the gasket by over-tightening the bolt.
4. Tighten the two bracket bolts holding the filter housing to the engine block with the 13mm socket wrench.
5. Bleed the trapped air from the fuel system. Refer to the vehicle user manual. Some models have a priming pump knob on top of the fuel pump that must be depressed several times to bleed the system and fill the pre-filter with diesel. Later models do not have a hand pump, but the engine must be turned over with the starter in 30-second bursts until the motor fires. Start the engine and carefully check the system for fuel leaks.
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How to Troubleshoot a Mercedes 300 SD


1. Place the SD card into a computer's SD card slot.
2. Open the 'Start' menu by pressing the left-mouse button on the blue icon in the lower left corner. Once the menu loads, click 'Control Panel.'
3. Open 'System and Security.' Click 'Administrative Tools' on the next screen. Double-click 'Computer Management' to open this option.
4. Pick 'Disk Management' in the left pane to view all storage devices connected to the computer. Right-click the SD card and select 'Format.'
5. Press 'OK' on the pop-up screen to confirm and format your SD card. This will format the card to its default settings and can be used in a Mercedes 300 car again.
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