What is the esp button in my audia6 - 2003 Audi A6

Hello Rick, ESP On constantly: The ESP light may be constantly lit if the "ESP off" button was pressed. The ESP can be reactivated by switching off the ignition and then on again. If the ESP light goes off, the system is fully functional. Check you owners manual to confirm the above procedure.

Try pressing the ESP button for 3 seconds, (See photo), to check you haven't pressed the button by accident. If not, try this website.

Mercedes ESP light warning How to RESET it yourself

The ESP button turns off your Electronic Stability Program. When that function is off, your vehicle will not respond as quickly and aggressively to your driving conditions. The ESP system actually applies your brakes just a little bit to specific wheels when you make a hard turn. It helps keep your car under control when you make a sudden swerve or hard, fast turn. You would only really want to turn it off when you want to let the vehicle deliver all the power possible to the wheels. If you are just driving normally, leave the button alone. It is a great safety system. ESP does for ABS what ABS does for standard brakes.

Go to www.radio-codes.com

Have your power steering fluid level checked.

The ESP is on by default......when you press the button and the light is on in the dash the ESP is OFF!

fuse box in the engine compartment near the battery, list should be on the cover, otherwise check the owners manual

Hi, what are you trying to repair? Is the ESP light on and you're trying to diagnose? If so, you need to have the system scanned with a VAG-COM to see what is throwing the fault (could be any of hundreds of reasons). Or are you trying to repair the ESP system (which would require replacing the OB computer)?. More details please

There should be a button labeled ESP next to the hazard switch.

(Page 343 of your owners manual)
This mode is entered by momentarily depressing the ESP
OFF switch (located in the center switch bank, next to the
hazard flasher switch).
When in Partial OFF mode, the TCS portion of
ESP, except for the "limited slip" feature described
in the TCS section, has been disabled
and the ESP/TCS Indicator Light will be illuminated.
All other stability features of the ESP function
normally. This mode is intended to be used if the vehicle
is in deep snow, sand or gravel conditions and more
wheel spin than ESP would normally allow is required to
gain traction. To turn ESP on again, momentarily depress
the ESP OFF switch. This will restore the normal ESP ON
mode of operation.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

IMPORTANT NOTE: PERMANENTLY YOU SHOULD LEAVE THE "ESP" BUTTON FREE! It is "ON" by default, and ESP warning lamp on dashboard is turned off.
If you need ESP system deactivation for short time, then push the ESP button. The ESP warning lamp on dashboard will be turned on, for warning you that ESP system is deactivated. Only for short time in few special cases ESP system needs to be deactivated when you need to skid the car to go out of a bad situation, (e.g. to start off on slippery road, to climb on hill slippery road, ...). When you push again the ESP button the ESP system will be activated back, and ESP warning lamp on dashboard will be turned off.
If you don't push the ESP button when driving, and the ESP warning lamp on dashboard will be turned on itself accidentally, the ESP system is faulty and it's not active! Then you need to go at workshop for repair the car!

Please do rate my response. Thanks!