How to Test an ABS Speed Sensor

1. Elevate the rear of the vehicle in a secure position with a car jack, and place it on jack stands. Place wheel blocks around the front tires. Remove the rear tires to test the ABS speed sensors.
2. Locate where the engines electrical wiring harness meets the sensors electrical wiring harness. This is generally in proximity and secured around the strut housing in the wheel well in the front and the shocks in the rear.
3. Remove the sensor from its position using a quarter-inch ratchet with an 8- to 10-mm socket, which is generally located by the heat shield on the caliper.
4. Examine the end of the sensor. If it looks like a big fur ball at the end, then too much contamination is disrupting the sensor.
5. Spray the sensor with brake cleaner and wipe with the rag to remove contamination. Contamination on the sensor can send erroneous signals to the computer.
6. Disconnect the engine harness from the sensor harness. Set the voltage meter to Ohms, and connect the positive and negative terminals of the voltage meter to the input and output on the sensor. If the voltage meter registers as infinity, then the sensor has failed and needs to be replaced.
7. Switch the meter back to Volts, if you do not see an infinity in the ohms setting. If the voltage meter reads above 5 volts, it is starting to fail and can cause intermittent problems. If the voltage meter reads below 5 volts, check the knock sensor for corrosion and check the electrical connections leading to the knock sensor.

How to Sync an Audi MMI amp an Android

1. Press the Power button on your Android phone. Unlock the screen, then press the Home button. Press the Menu button, then tap Settings.
2. Tap Wireless & Networks. Select the box net to Bluetooth to enable Bluetooth, then tap Bluetooth Settings. Tap Discoverable.
3. Turn the ignition key in your car to power on the electronics system. Tap the TEL button on the center console, and then tap the center stick button to start the pairing process.
4. Wait for the cars Bluetooth radio to connect with your Android phone. This could take a few minutes. If the car sees more than one phone, use the stick to select the correct phone.
5. Switch to your phone. Tap Audi MMI under Bluetooth Devices. Enter a four-digit code on the phone and tap OK, then switch back to the car dash. Press the center button to select Yes. Use the stick to enter the same four-digit code on the rotary dial, then turn the dial to the bottom, and click OK.
6. Tap OK on the phone. The car will automatically copy your phone book to the cars electronics system for voice input. When a call comes in while your phone is connected to the car, press the Accept or Decline button on the steering wheel to take or block the call.

How to Find the Build Date of an Audi

Obtaining Build Year from VIN
1. Obtain the vehicles VIN from the dashboard, a body panel, or the Audis engine bay. Newer Audis have a display window for the VIN at the lower drivers side corner of the windshield.
2. Count out to the 10th character in the VIN and note its value.
3. The 10th character identifies the model year by providing a letter, or number. For example, 1997 is represented by the letter V, 1998 is represented by W, 1999 is represented by X, 2000 by Y, 2001 is 1, 2002 is 2, and so on.
Obtaining Build Date from Specifications Sheet
4. Locate the specifications sheet for your Audi in one of the door jams. If your car is a coupe, it is most likely located in the drivers side door jam. If its a sedan, check the rear door jams.
5. Locate the Build Date field on the specifications sheet
6. Note the month and year printed on the specifications sheet in the Build Date field.

How to Turn on Headlight Washers in an Audi TT

1. Start the engine of your Audi TT. Turn on the headlights.
2. Pull the windshield washer lever toward you and hold it. The wipers on the windshield will engage and will engage the headlight wipers as well.
3. Release the windshield washer lever. Turn the headlights off to disable the headlight wipers.

How to Replace the Transmission Fluid in an Audi A4

1. Warm your cars fluids by driving at least 10 minutes before parking. This allows the fluid to thin, making the emptying process easier.
2. Elevate your vehicle evenly using a car jack and jack stands.The car should not be tipped in either direction, since a tipped transmission is dangerous during the procedure because hot fluid could spill out and cause injury.
3. Locate your transmission pan under the drivers side hood of your vehicle. The fluid will be in the square, bolted filter pan.
4. Place your drip pan on the ground beneath the transmission pan area, as a safeguard in the case of spillage.
5. Remove all of the bolts using your socket wrench on one side of the transmission pan, beginning in any corner. It is important to take the bolts off very slowly, so that any fluid that drips will gradually fall into the drip pan and not on you.
6. Lower the transmission pan to ground level without tipping it to either side, since it is likely to be filled with old transmission fluid. If any fluid spills, use your shop rag to wipe up the spill.
7. Discard the old transmission fluid by carefully pouring one corner of the transmission pan at the opening of the milk jug until the pan is completely emptied.
8. Wipe the transmission pan clean, so that no particles or residue from the old fluid can contaminate the new fluid.
9. Mount the transmission pan back into its original position by hand-tightening the bolts for a temporary hold.
10. Secure the bolts into place using your socket wrench. It is important to wiggle the pan a bit to be sure that no bolts are loose and that there is no crevice between the transmission pan and the actual transmission.
11. Remove your jack stands and lower the car jack with caution.
12. Fill the new transmission fluid to the fill line. The typical refill capacity for an Audi A4 is three quarts, although you should watch the line carefully to be sure that you do not go significantly over or under this marking.
13. Run your engine in the park gear for approximately five minutes before checking the fluid levels again. The warmth of the engine will make the fluid settle into the transmission.
14. Measure the fluid level using the transmission dipstick. If the fluid reads below the capacity line, more fluid can be poured into the transmission opening while the car is still running. Shifting the gears of the car may also help the fluid to settle for a more accurate reading, although this is not required.
15. When the dipstick shows the transmission fluid at a sufficient level, the transmission fluid change is complete.

How to Test an Audi Cruise

1. Locate the cruise control bar, usually located to the left of the drivers wheel. Along the edge of the bar will be the word Set, and you will see buttons for controlling the Speed.
2. Drive the car to your desired speed, and then pull the bar towards you until it is in the On position.
3. Click the bar up or down to increase or decrease the set speed.
4. Click the Distance forward or backward to adjust the amount of distance you want the car to keep from the nearest car in front of you. Note that this feature is only available for models using the adaptive cruise control system. You will see two cars on your driver control panel showing you how the distance is set.
5. Release the brake and clutch pedals, as pressing them will disengage the cruise control system. If the cruise control didnt work at first because you had your foot on one of these pedals, pull the bar towards you. This is the Resume setting, and it will re-engage the cruise control. Your car should then keep the set speed.