2017 mdx Car starts without pressing the brake pedal

uzomakiyuzomakiy Member Posts: 2
edited August 8 in Acura
HI, I have a 2017 Acura mdx and all of a sudden the car starts without pressing the brake pedal. I tried to put the car in ignition on only but won't as the car start right away, now not giving me the opportunity to scan the car while ignition on only.

pls i need help...
Tagged:

Comments

  • uzomakiyuzomakiy Member Posts: 2
    i have change the brake light and the brake light works normal
  • thecardoc3thecardoc3 Member Posts: 5,850
    You may need a professional level scan tool for this. The first thing to do is pull codes from every module on the car and see what is being set. Then you need to access scan data in the Engine Control module, the driver's side dash MICU if accessible and the Keyless Access/TPMS control unit. Find the brake light switch input to those modules and try hitting and releasing the brake pedal and see if the circuit status agrees with the actual pedal position.

    By chance, is there a trailer harness attached to the vehicle?

    You may still have a brake lamp issue. You will need to test and be certain that the brake output circuit, and the input circuit o the above modules is resting at 0v. Do you have access to the schematic for this system?
Sign In or Register to comment.

Helpful Tools

Most popular vehicles

Your Privacy

By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our Privacy Statement, and you agree that your use of the website is subject to our Visitor Agreement.