ESP System Function Test (Conti/Teves)

From Ross-Tech Wiki

ESP System Function Test


  • The ESP road test serves to check the plausibility of the signals from the lateral acceleration sender, rotation rate sender and pressure sender.
  • It should always be carried out after removing or replacing any parts of the ESP system.
  • It is not possible to cancel the ESP road test after it has been started. The complete test procedure must be performed.


  • ABS Warning Light (K47) ON and ASR Indicator Light (K155) OFF.
  • Engine RUNNING.
  • Vehicle standing.


  • Press brake pedal firmly until the ASR Indicator Light (K155) goes On -or- a change in the lamp behavior has occurred. A brake pressure of at least 35 bar needs to be reached for this.
  • Start road test (Do this on an enclosed site or make sure to drive according to traffic regulations).
  • Make a right turn, then a left turn (or vice versa). A rotation rate (turn rate) of ~10 °/s must be reached while driving these turns.
  • The ABS Warning Light (K47) should now turn OFF.
  • A common example for turns like this is driving turns with a radius of 10 to 12 meters (30 to 40 feet) with a speed of 15 to 30 kph (9 to 18 mph).
  • The ABS, EDS, ASR and ESP functions may NOT get activated during these test.
  • Doing other maneuvers between the turns should have no influence on the ESP System Function Test.

Special Notes

  • If the ASR Indicator Light (K155)light turns off but the ABS light stays on, then the test has timed out. You must come to a complete stop and again press the brake pedal firmly until the ASR Indicator Light (K155)changes.
  • Several customers have reported success by driving 10MPH (16KPH)in a straight line for 10 seconds, then turn the steering wheel almost 360 degrees (left or right) and do a complete circle.
  • If you are having trouble getting the function test carried out please contact us directly.