How to know there is the right level of oil in the transmission of a 2006 vw jetta?

Your 2001 VW Jetta is likely equipped with a "sealed" transmission unit. There is no dipstick that you can use to measure the level of transmission fluid in sealed transmissions. Unfortunately, it's a dealer item that needs to be addressed by a qualified mechanic or at a VW dealer.

2004 Volkswagen Jetta

THE 5 SPEED AUTOMATIC TRANSMISSION

At the bottom of the automatic gearbox (tiptronic) you will find one threaded plug on below surface, (follow red arrow in the picture below). This is for emptying.




The oil level threaded plug is placed on the car front lateral automatic gearbox surface, (follow yellow arrow in the picture below).



The filling oil plug is placed on the upper automatic gearbox surface, (follow green arrow in the picture below).


Automatic Transmission Fluid (ATF) checking:
1. Requirements for check:
1.1. Vehicle standing on level surface.
1.2. Transmission must not be in fail-safe mode.
1.3. Shift lever in "P" position, parking brake applied.
1.4. Engine idling.
1.5. Air Conditioner and heater OFF.
1.6. ATF temperature must not exceed 104 Fahrenheit degree (40 Celsius degree) at start of test.
1.7. Automatic gearbox oil capacity: 2,5 liter. Only ATF with VW designation may be used. Do not use any lubricant additives.
1.8. Automatic Transmission Fluid ATF - part number: VW G 052 990 A2
1.9. An ATF level check when transmission oil temperature is too low results in overfilling, when too high results in underfilling.
2. CAUTION: Too much or too little ATF will affect the operation of the transmission. The ATF level must be checked at regular intervals.

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THE 5 SPEED AUTOMATIC TRANSMISSION

At the bottom of the automatic gearbox (tiptronic) you will find one threaded plug on below surface, (follow red arrow in the picture below). This is for emptying.




The oil level threaded plug is placed on the car front lateral automatic gearbox surface, (follow yellow arrow in the picture below).



The filling oil plug is placed on the upper automatic gearbox surface, (follow green arrow in the picture below).


Automatic Transmission Fluid (ATF) checking:
1. Requirements for check:
1.1. Vehicle standing on level surface.
1.2. Transmission must not be in fail-safe mode.
1.3. Shift lever in "P" position, parking brake applied.
1.4. Engine idling.
1.5. Air Conditioner and heater OFF.
1.6. ATF temperature must not exceed 104 Fahrenheit degree (40 Celsius degree) at start of test.
1.7. Automatic gearbox oil capacity: 2,5 liter. Only ATF with VW designation may be used. Do not use any lubricant additives.
1.8. Automatic Transmission Fluid ATF - part number: VW G 052 990 A2
1.9. An ATF level check when transmission oil temperature is too low results in overfilling, when too high results in underfilling.
2. CAUTION: Too much or too little ATF will affect the operation of the transmission. The ATF level must be checked at regular intervals.

Most 1995-on VW models don't have a transmission fluid dipstick for checking the transmission fluid level. To fill and check the level of the VW automatic transmission fluid you have to remove a plug on the side or bottom (location depends on model and if you have an automatic vs. manual transmission) of the transmission drain pan. The factory manual refers the expensive VAG 1924 special tool for pumping the VW automatic transmission fluid into the oil pan.

You can find the reset procedure here

https://resetoillight.com/volkswagen/oil-change-light-reset-volkswagen-jetta-2005-2006-2007/

Drive the Jetta for ten minutes or so to warm up the transmission fluid.
Step 2Drive the Jetta into the work area and place your foot on the brake. Shift the shifter into each gear and hold it there for 3 to 4 seconds. Return the shifter back to drive.
Step 3With the engine running, lift the Jetta on a four-post side-by lift or a drive-on lift. The vehicle must be level when elevated to get a proper fluid level reading.
Step 4Locate the transmission. On the low right hand side (passenger side) of the transmission is a small service plug. Place a drain bucket strategically beneath the plug and remove it with a hand wrench. A small amount of transmission fluid should trickle out indicating that the fluid level is okay. VW recommends during these maintenance service interval checks to test the temperature of the transmission fluid using a scan tool. VW also recommends replacing the transmission check plug each time it is removed.
Step 5If any transmission fluid is needed to be added, locate and remove the fill plug that is on the front left upper corner by the oil pan. Add a little bit of fluid at a time through this portal while watching the check level portal and as soon as it begins to trickle out from that outlet, the transmission fluid level is full.

Hi there,

Jetta's 2006 carry sealed gear box. There is no dip stick to check the transmission fluid. Per manufacturer, transmission fluid requires to change unless there is any issue with transmission. I hope this helps.

The tiptronic is not the DSG - two separate transmissions. You don't need to service the tiptronic every 40k like you do the DSG.
VW considers the fluid in a Tiptronic tranny as "lifetime" fluid - it doesn't need to be changed.

The engine oil specifications can be found on the top of the filler cap under your hood, as well as in the VW Owner's Manual under specifications. VW's produced from the late 1990's typically use 5W-30 motor oil, and in the 1980's they typically speced 10W-30 (API*,SL 10W-30) motor oil. Your car knows best, check those locations first.