Check the Evap sinser
What does abs button do in a 2001 vw jetta
Roders ,check your front breaks
temperature warning light
It's just a warning light that there may be icy conditions on the road.
On the Jetta, the dashboard warning light with a circle and a box above it is indicating that there is a problem with the battery. This light also indicates a burned out bulb in the headlamps, taillights, or blinkers.
Burned out exterior light bulb.
Check fuel cap: Illuminates when the fuel cap may not be properly installed. Continued driving with this light on may cause the Service engine soon warning light to come on.
Hand brake warning light
Decrease pressure on the accelerator pedal, or downshift, in order to reduce your speed. Warning light will be extinguished.
Burned out exterior bulb
According to my 2004 Jetta owner's manual, that's the fuel filler cap indicator: " A warning light in the instrument cluster will come on if the fuel filler cap is not properly closed. If the warning light comes on, you should turn off the engine and close the fuel filler cap properly. Once the cap is properly closed all the way, the warning light will go out when the ignition is turned on again and the check cycle is complete. The completion of the check cycle depends on how you drive. If the awarning light has been on for at least 5 minutes, it will go out only when the ignition is turned off and on again."
Be more specific! Warning light or check engine. If, warning light. What function?