From the moment I bought my Audi TT, I had a hard time pulling the oil dipstick because the handle on it had broken off. To make matters worse, when I replaced the broken N249 hoses under the hood, the oil filler tube broke off when I was removing the N249 bracket. It’s probably no surprise that these parts break since they are plastic parts that are constantly exposed to heat in the engine bay.

When your intake manifold gasket fails, it can lead to an air leak that affect engine performance. This results in loss of power and can cause emissions issues, such as throwing a check engine light, produce rough idle, and elevate engine temperature. On the MK1 Audi TT, it is a little bit of a pain to get to remove the intake manifod, so I wouldn’t recommend replacing it unless you’re already experiencing related issues on your car.

The side marker lens on the Mark I Audi TT (model years 2000-2006) is a simple part that clips into the side of the front fender. To replace this lens is really simple, but you won’t know that unless you know how to remove it. Since the side marker lens on my TT was cracked, I got a replacement part and wanted to write a quick little tutorial to help anyone who is looking to do the same job. If you need to change out a burnt out bulb, it will also require taking the lens cover off to replace the bulb.

If you get a P1548 DTC code on your Audi TT, you may want to look at troubleshooting your N75 valve or even replacing it outright. In my experience, the cost of a replacement N75 valve is not much so it may be worth it to just replace it outright. I say this because even testing the N75 valve may show that it is working, but it may still be cause your P1548 code and be the contributer to your boost issues.

If you’ve ever had to replace the car battery in your MK1 Audi TT, you may have turned your car back on and found the word “SAFE” on the screen of your radio. This message comes up the first time you start your vehicle any time your car is disconnected from the battery. You’ll need to enter your 4 digit code into your radio to bypass the “SAFE” screen.

If your MK1 Audi TT is experiencing a constant clicking noise, there are two reasons why it happens. The first reason is a faulty hazard light switch, which is the easier of the two to address. The second reason is due to a faulty turn signal switch, which is a slightly more involved repair.

Because it would have been difficult to refurbish the sun visors (especially with the paint damage), I simply replaced them with ones that I found at the junkyard. As an added bonus, the sun visors I picked up didn’t have those unsightly warning labels on them. This post will go through the removal of the sun visors so that you know how to safely remove/install them, whether you plan on replacing them or taking them off to do a proper cleaning.

After addressing the biggest issues on my 2002 Audi TT (MK1) that were just too difficult to ignore, I started knocking out some of the easy maintenance items on the car. Probably the easiest one to check off the list is the engine air filter, which typically takes only five minutes or so to do. Audi generally recommends the engine air filter to be replaced every 20k miles.

Replacing the cabin air filter on any vehicle is usually pretty easy to do. The location where you replace the cabin filter tends to either be behind the glove box, or near the firewall in the engine bay. The MKI Audi TT’s cabin air filter is located in the engine bay on the passenger’s side. There is a small flap that needs to be opened in order to access the cabin air filter for replacement. It is typically recommended to replace the cabin air filter approximately every 10k miles.