Door sensor controls

SOURCE: vw jetta 2003

Take your car to autozone or another parts store that will be willing to pull the OBD II diagnostic codes for free or buy an inexpensive $40-50 OBD II diagnostic reader.  

I have a 05 Jetta TDI 100K miles and a 99 Passat AEB wagon 140K miles, and I don't think there is a specific Catalytic converter instrument light, just a generic check engine light to inform you to pull the OBD II codes (there are hundreds of codes your Jetta can throw ... but not hundreds of lights on the dash;~) ).  If you don't overfill the car with oil, or drive like a maniac, the VW cats should last for 200-300K or better.  Of course I only wore out 40% of the original front brake pads in 100K miles in the Jetta too.  I know how to work on cars ... but prefer not to have to ... so I drive easy;~).

FYI - IF the cat is plugged up, your car will not have any power.  If you pass emission test and have poweer ... forget about the cat,  just read the codes

cheers
..ajm

SOURCE: 2001 Jetta Window stuck down in door

the window clips let go of the window .... there is a recall for this and should be taken back to dealership to have upgraded clips installed on regulators on both sides

SOURCE: transmission fluid level check 02 jetta tdi auto

VW didn't put a "dipstick" on the trans for whatever reason. You technically have to use the VW Vag-Com scanner to properly check the trans fluid level as VW says it has to be checked at a specific temperature. But there is a "shade-tree" workaround. Start the car and leave the engine running the throughout the entire procedure. You have to get the trans fluid warm-a little under normal operating temp. 95F-104F is what you want-you can attain this after letting the car idle for 8 or so minutes. Continuing, leave the trans in park, and make sure you are on as level of a surface as possible. Then loosen the allen plug on the bottom of the trans pan. You will then see another plug. Remove this plug. Fluid should just trickle out of the hole if it is at the proper level. If it trickles out, you are good. If it doesn't you need to add fluid. Add VW spec ATF through the fill port.The fill port on the top front of the trans is capped off by a red cap and is very visible. Very carefully pry the cap off and then wiggle the plug out. I'd highly suggest having a spare red cap on hand-VW dealer has them. Then you can pour fluid into the trans. Add a little bit at at time, and all the while watching for the fluid to tricke out of the trans plug hole. When it trickles out, replace the inner plug and then the outer plug. That's it. Recheck after driving the car for a few miles. FYI- A flud and filter swap on the the VW auto trans takes 3 liters, so keep that in perspective. I hope this helps you out.

SOURCE: nox sensor. What is it? How much does it cost to repair?

Well, it could be either and oxygen sensor or a knock sensor.

Oxygen sensor monitors O2 levels in the exhaust.

The knock sensor listens for engine pinging and adjusts the timing as needed.

Prices vary on repair. I would recommend having the owner of the car either show you something from a repair shop that has the sensor name written, or take the car to a parts store that offers free code scanning and see what comes up.