How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask mike_a_mechanic Your Own Question
mike_a_mechanic, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 5471
Experience:  17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.
Type Your Mercedes Question Here...
mike_a_mechanic is online now

I got a mercedes elegance c240 automatic and when I drive on

This answer was rated:

I got a mercedes elegance c240 automatic and when I drive on my engine panics and I wish to know why ?
Hello, welcome. My name isXXXXX will do my very best to assist you with your question. I apologize if you have been waiting long for a response.

Are there any warning lights coming on?
Customer: replied 4 years ago.

Thank you for your answer and so far no light coming on

From what you are describing the issue that you are having is consistent with the internal vehicle speed sensor that is located behind the conductor plate inside the valve body. This is very common to fail on these vehicles and results in this issue, the sensor and plate will need to be replaced.
mike_a_mechanic and other Mercedes Specialists are ready to help you