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 Fill Up the Transmission for a 1999 Audi A4

1. Turn off the car and make sure that the keys are out of the ignition to ensure that the car will not be turned on while you are working on it.
2. Put the hand brake on the car and then place a large log or brick behind one of the back tires to avoid the car sliding back while you are working on it.
3. Put a jack behind one of the front tires of the Audi A4 and jack up the car about 3 feet from the ground and then slip a jack stand to hold that side of the car up. Repeat this step on the other side of the vehicle.
4. Slide in under the car and look up into the hood area of the car until you find the A4s gear box. The gear box will look like a round, metallic cylinder.
5. Slip a 17mm Allen wrench behind the gear box and unscrew the fill bolt. Slide the fill bolt out completely once its unscrewed. If any transmission fluid drips out of the hole the fill bolt was in, then the transmission is full and doesnt need any more fluid added to it.
6. Fill up a fill bottle with transmission fluid for your 1999 Audi A4 and then inject the transmission fluid in through the hole where the fill bolt used to be until some of the transmission fluid seeps out.
7. Replace the fill bolt and tighten it with the same Allen wrench.
8. Slide out from underneath your A4 and carefully lower your car back to the ground.