Esp light goes on when going 60mph why and what is it?

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.

only an inspection can reveal which, have your brakes checked

1. If the ESP light on a Mercedes Benz stays on, try holding the ESP button down for a few seconds. If holding ESP down for a few seconds doesn't reset the program, it's time to head to your local Mercedes dealership for a repair. More likely than not, there is some sort of error with the steering mechanism which causes the ESP light to remain on. You don't have to be alarmed but it's best to get it checked out as soon as you're able to. Most Mercedes have a four year, fifty thousand mile warranty which is, literally, bumper to bumper except for maintenance service. But if the ESP light stays on, this will almost certainly be covered.
2. If your car goes into a spin and the ESP light does not come on, it's time to see that repair shop too. Your Mercedes electronic stability program is not working properly if the car does not take control when a spin is detected.

Read more: http://www.mademan.com/mm/what-esp-light-mercedes-benz.html#ixzz3g3ve2zV0

see if running the fault codes supplies you with an answer . Engine lights indicate problems with the engine and the transmission so both may indicate a wiring problem in/to the transmission or problems with the TCM

take to a audi garage befor you do some expensive damage

could be coils.

If the light is on, that means a trouble code is stored in the computer. Get the code and you'll have a starting point for diagnosis. The fact that it comes back on after resetting means you haven't fixed the underlying problme.

esp light comes on after driving for few minits and goes out when i slow down can any one help audi a4 2.5 v6 tdi 2002

If the ESP light is on, the system is not functioning. have your dealer look at and replace your Brake Light Switch

hello,good day,try to replaced your brake light switch,this switch have 2 function,for brake light and for esp and bas module,ty

The light you are referring to is your ESP light. You should have a button above the radio that reads "ESP" Electronic Stability Program is what it stands for.. its your traction control. It is somehow directly tied into the MAF and if the MAF goes it turns off.
ESP, electronic stability control, keeps the car going where
you steer it. You might have a dirty ABS wheel sensor. Not always will the MAF trigger a CEL. But it can and will turn on the ESP light if its not functioning or plugged in. MAF can range from $80-$120 and Is easy to replace yourself. It is right next to the airbox.