How to Replace Audi TT Coil Packs

1. Park your Audi TT on a level surface, and pop the car's hood.
2. Remove the plastic engine cover that surrounds the oil filler neck to reveal the coil packs. Remove any plastic screws securing the engine cover in place using your flat-blade screwdriver.
3. Position the head of the screwdriver underneath the top of the coil pack, pressing down on the screwdriver's handle to pry the coil pack loose. Once you have loosened the coil pack, gently pull it up and out.
4. Press down on the plastic notch at the base of the coil pack's connector, and pull the coil pack out of the wiring harness.
5. Insert the new coil pack into the wiring harness, and gently slide it back down on top of the spark plug. Press and click it into place to secure it.
6. Repeat steps 4 and 5 on any other coil packs you plan to replace.
7. Reinstall the plastic engine cover and close your hood to complete the procedure.

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How to Replace the Battery in a Mercedes C240

1. Turn off the ignition and any accessories inside the car. Remove the key to avoid accidental starting. Open the hood.
2. Lift the three clamps on the back of the battery filter box on the passenger side of the engine compartment. Remove the filter box cover to expose the battery.
3. Disconnect the negative cable with a wrench. Repeat the process for the positive cable. Remove the retaining nuts on the battery with a wrench. Lift the battery out of the battery tray.
4. Insert the new battery into the tray in the same alignment as the one you removed. Secure the battery with the retaining nuts, tightening them with a wrench.
5. Reconnect the positive cable and tighten it using the wrench. Repeat the process for the negative cable. Replace the filter cover and press the clamps down to lock it in place. Close the hood and start the engine to test the new battery.

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How to Obtain a Lost 1998 Audi A4 Radio Code

1. Locate your motor vehicle title or registration and put it in a folder that you can take to the dealership. This has your 17-character VIN on it and proves your ownership of the vehicle.
2. Disconnect the negative battery terminal on your battery, using a battery terminal wrench.
3. Insert both special radio removal tools into the front slots on the radio press them down until they detach the radio retaining tabs. Grip both special tools and pull the radio out of the dashboard.
4. Look on the top or the back side of the radio for a serial number. Write this number down on a piece of paper and put it in the folder with your vehicle’s registration.
5. Depress the locking tabs on the back of the radio to remove the tools, then set the radio back into the dashboard and press it into place until it is flush with the dash and you hear the locking tabs engage.
6. Reconnect the negative battery terminal. Travel to your local Audi dealership and visit the service department. Tell them that you need a code for your radio. Wait while they access the security database on their computer, then provide your VIN and proof of ownership along with your radio serial number. They will input this information into the system to obtain your radio code.

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How to Change the Cabin Air Filter on a BMW X3

1. Locate the cabin air filter compartment, which is in the center of the under-hood area and right up against the firewall, just in front of the windshield. It is black and rectangular with plastic air vents on top.
2. Unscrew the thumb screw located in the front center of the plastic lid to the cabin air filter compartment. Once the screw is removed, press on the tabs on either side of the lid and lift it directly upward to remove it.
3. Look at the side of the filter, which sits loose just below the lid to the compartment. You should see an arrow printed on the side of the filter. Take note of the direction the arrow is pointing, as this is the direction of the air flow. You will need to install the new filter with the arrow pointing in the same direction.
4. Pull the old filter out, then slide the new filter in, noting the direction of the arrow.
5. Put the lid to the compartment back on and press it down. It should click audibly as each side locks into place. Replace the thumb screw.

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How to Replace the Fan on a 2001 BMW 325ci

1. Purchase an appropriate replacement fan for your 2001 BMW 325ci.
2. Lift the hood and prop it open. Find the engine fan in the front of the engine, above the radiator. The fan is attached to the water pump by a fan nut.
3. Attach the 32 mm wrench to the fan nut. Hammer the 32 mm wrench clockwise to loosen the fan nut. Remove the fan nut and put it aside for attachment to the new fan.
4. Spin the fan clockwise because the fan nut has a reverse thread on it. Loosen the fan with your hands until it detaches.
5. Put the new fan on by turning it counterclockwise to attach it to the water pump. Tighten the fan nut with the 32 mm wrench. Close the hood.

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BMW Intake Manifold DIY

BMW Intake Manifold Removal
1. Disconnect the negative cable from the battery using a wrench to loosen the terminal nut. Relieve the fuel pressure by opening the valve on the fuel rail. Open the valve on the bottom of the radiator using a wrench and drain the engine coolant to the drain pan.
2. Unplug the electrical wire from the mass air flow sensor. Label the wire with the marker and masking tape so you know its proper location. Loosen the air intake duct clamp with the screwdriver and remove the air intake housing from the engine. Remove the cover from the accelerator cable.
3. Disconnect the throttle cable from the throttle body by unhooking it. Disconnect the cruise control cable if your BMW has cruise control installed. Label each hose and electrical wire on the throttle body with the marker and masking tape. Disconnect the wires and hoses from the throttle body.
4. Pry the clamp on the brake booster hose loose with a screwdriver on the right side of the intake. Pull the old clamp and the hose off the fitting. Loosen but do not remove the upper manifold to support bracket bolts using a wrench. Loosen and remove the bolt and two nuts securing the upper manifold to the lower manifold using a wrench.
5. Label the coolant hoses using the marker and masking tape. Remove the hoses using a screwdriver to loosen the clamps. Remove the breather hose from the PCV valve. Remove the upper manifold assembly from the engine. Disconnect the dipstick tube mounting bolt using a wrench. Label the engine wiring harness connectors with a marker and masking tape.
6. Disconnect the wires by unplugging them. Remove the fuel rail with the injectors attached using a wrench. Plug the fuel lines with the fuel line plugs. Plug the fuel injector ports with the port plugs. Remove the bolts from the front and rear lower parts of the intake manifold using a wrench. Loosen the intake manifold to cylinder head bolts with a socket, ratchet and extension, but do not remove them yet.
7. Catch the nuts as you remove the bolts from the manifold using a long parts retrieval magnet in case you drop any of the small nuts. Lift the manifold away from the engine high enough to clear the studs and push the fuel lines between the intake runners. This will give you access to the remaining electrical wires. Label and disconnect the wires using a wrench.
8. Lift the manifold out of the engine compartment carefully. Cover the manifold ports on the engine with clean rags until you begin the reassembly process to prevent foreign objects from getting in the engine and causing damage.
BMW Intake Manifold Installation
9. Remove the rags covering the intake ports on the engine. Place a new gasket on the engine block between the block and the new intake manifold. Connect the wires to the starter and alternator by plugging them in or securing the nuts with a wrench. Install the front and rear lower intake manifold bolts. Tighten the bolts using a wrench.
10. Place the lower intake manifold on the block and secure the fasteners using a wrench. You may need the assistance of the parts retrieval magnet in case you drop one of the nuts. Remove the plugs from the fuel injector ports and fuel lines. Install the fuel rail on the engine and tighten the bolts with a wrench. Plug the wires into each fuel injector.
11. Reconnect the engine wiring harness according to the labels you made when you removed them. Install the oil dipstick tube and tighten the nut with a wrench. Place a new gasket between the upper and lower intake manifold parts. Install the upper intake manifold. Tighten the bolts with a wrench.
12. Attach the breather hose to the PCV valve and tighten the clamp with a screwdriver. Install the coolant hoses and tighten the clamps with a screwdriver. Install the bolt and two nuts that secure the upper intake manifold to the lower. Tighten them with a wrench. Install the upper manifold to support bolts using a wrench to tighten them.
13. Connect the brake booster hose and install a clamp. Tighten the clamp with a screwdriver. Connect the wires and hoses to the throttle body according to the labels you made when removing them. Connect the cruise control cable to the throttle body if your BMW has cruise control installed. Connect the throttle cable to the throttle body.
14. Install the accelerator cable cover. Install the air intake duct and housing to the engine. Tighten the clamp with a screwdriver. Plug the electrical wire into the mass air flow sensor. Refill the radiator and reservoir with engine coolant. Connect the negative battery cable and tighten the terminal nut with a wrench.

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How to Remove the Radiator on a 2001 BMW 3 Series

1. Let the engine cool for several hours prior to working on the car. Pop the hood and open the radiator cap. Lift up the front of the car with the jack and set it on jack stands.
2. Place the drain pan underneath the expansion tank on the side of the radiator. Open the drain valve at the base using your hands and allow it to empty coolant into the pan. Remove the splash guard from underneath the car using the 3/8-inch ratchet and socket. Open the petcock at the bottom of the radiator and let the coolant drain into the pan.
3. Remove the hose clamp on the upper and lower radiator hoses at the radiator using the flat-head screwdriver. Pull the hoses off the radiator by hand and point them down towards the drain pan. Remove the plastic rivets holding on the upper fan shroud using the flat-head screwdriver.
4. Remove the automatic-transmission cooler lines from the side of the radiator using a line wrench if you have an automatic transmission. Place the flat-head screwdriver underneath the radiator-holding clips and pull them back to pop the radiator free. Lift the radiator up and out of the engine compartment.

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How to Install a Stereo in a 2002 Audi Quatro

1. Acquire four Audi stereo DIN keys, available at any local Audi dealer. The keys allow you to unlock the stereo and remove it from the dashboard.
2. Disconnect the negative battery cable from your Audi's battery.
3. Slide the DIN keys into the four release slots on the stereo. The slots are located in the four corners of the stereo. Press the keys in until you hear them click. While still putting pressure on the keys, slide the stereo forward and out of the dashboard. Disconnect the wiring harness and antenna cable from the back of the stereo.
4. Slide the cage included with your after-market stereo into your dash adapter. Bend the tabs on the cage down to lock it into place.
5. Slide your stereo into the cage and dash adapter. Connect the wiring harness and antenna cable to the back of the stereo. All stereos connect differently; refer to your stereo's owner's manual for connection instructions.
6. Slide the stereo and dash adapter into the dashboard. Press it in until you hear it click into place. Reconnect your battery.

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How to Apply BMW Touch Up Paint

1. Clean the chipped area free of any debris. Use moistened sandpaper on the edges of the chipped area just enough to make it smooth without adding scratches. Clean and dry the area again after sanding.
2. Apply the touch up paint with a toothpick with the tip broken off or a small, very thin, soft artist's brush. Avoid using the brush that is provided with the paint kit. Allow a tiny amount of paint to smoothly adhere to the toothpick or the brush. If too much paint coats the toothpick or brush, gently clean it off and try again. Apply the paint by tapping it lightly in the center of the chip and letting it 'run' to the edges, filling in the chip. It is important that you do not try to actually brush or stroke the paint onto the chip. Less is more, because many layers of paint will be needed to create an invisible repair.
3. Allow the paint to dry according to the label's instructions.
4. Repeat Steps 1 to 5 eight to 10 times for an optimal result.
5. Use ultra-fine,1600-grit sandpaper to gently smooth over the entire repaired surface where the chip used to be. Wet the sandpaper and sand as lightly as possible until the surface of the repair is completely flat and smooth. Finish by adding a layer of the clear coat from the kit, allowing the top coat to dry thoroughly, and applying car wax (if desired).

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How to Reset the Service B Warning Light in the 2008 Mercedes C300

1. Turn the ignition switch to 'On' without starting the engine.
2. Press the menu button on the left side of the steering wheel until the total mileage is displayed.
3. Press the up or down arrow button on the steering wheel until 'Service B' is displayed.
4. Press and hold the trip meter reset button until the display indicates the word 'Reset.'
5. Press the trip meter reset button to confirm and reset the service B light.

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