Question about Mercedes-Benz S-Class

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When I start my 01slk230 everything is ok as I drive as soon as apply brakes bas/esp light comes and doesn’t go out till I stop turn off engine start the car again drive it does the same thing

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  • 12 Answers

Stop light switch is very common for this symptom, if the bas release switch has a stored code the whole break booster will need to be replaced.

Posted on Nov 14, 2017

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Posted on Jan 02, 2017

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SOURCE: what does 'BAS ESP' mean? its come up on my dash-board on my car

Brake Assist System, Electronic Stability Programme. It will need to go on a computer, the most obvious thing is the brake light switch, fault will need to be erased after fixed.

Posted on Jul 13, 2009

  • 99 Answers

SOURCE: 2005 magnum esp/bas and engine light on

you need to see what the eng lite for if there is a trans codes usually the pcm wont let the speed go over 40 stays in safe mode untill you fix the problem or change the sensor,for the esp you need to chage the esp sensor and recalibrate by the dealer

Posted on Jul 21, 2009

  • 119 Answers

SOURCE: my 2002 vw passat esp light comes on when you turn the engine on

Hi Amanda
I have come up against this problem a few times before.
If the ABS. light is NOT on, and its the ESP light only that is on...your problem may well be a faulty Yaw sensor. This unit is fitted to the floor panel under the rear seat...in the centre. Another problem (although not all that common) is a faulty ESP switch. You should have an OBD code reading done to make sure. If a new YAW sensor must be fitted, the car must be driven with a full steering lock in both directions (left and right) at a speed over 20 Km per hour after fitting. If this is not done the light will remain on, even though it will now drive ok.
As for the price of this unit...Here in Ireland it costs around 140 euro. Hopefully its cheaper where you are. So better to have the codes read first.
I hope this is of some help to you.
Good luck with it
John

Posted on Aug 19, 2009

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  • 174 Answers

SOURCE: I have a E240 210

with regards of the eps /bas,abs you have to replace the brake switch.

Posted on Jan 24, 2011

tunde007
  • 2382 Answers

SOURCE: ESP/BAS warning light on. went

Hi, these systems are all linked together. Most commonly, one of the wheel speed sensors is not reading or is reading incorrectly. This can also occur on slippery surfaces where one or more wheel slides enough to cause the sensor to drop the signal, but not enough to meet criteria for an abs or esp episode. If the light comes back every time you turn on the ignition, there is a deeper problem.
The system has detected a fault in the electronic stability program - brake assist system. You have an electrical connection at the rear wheels secured to the inside of the brake area and are viewable from under the vehicle. It is a small wire harness running to each wheel. Grab the connector and wiggle it around, and make sure they are tight. Due to the connector being mounted low to the ground, sometimes they become dirty or corroded, not making contact. Do this on both sides and see if the lights turn off.

If the light does not turn off, you have to replace dynamics sensor, which is mounted UNDERNEATH the center console in the car. There is a "lost communication to dynamics sensor" and "low voltage to dynamics sensor supply"..

Posted on Feb 13, 2011

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1 Answer

The esp bas light is on my 2009 dodge 1500 and it won't start


An Electronic Stability Program (ESP)/Brake Assist System (BAS) indicator is standard equipment on all instrument clusters. The ESP/BAS indicator is serviced as a unit with the instrument cluster.
The ESP/BAS indicator gives an indication to the vehicle operator when the Electronic Stability Program (ESP)/Brake Assist System (BAS) has been activated. This indicator is controlled by a transistor on the instrument cluster circuit board based upon cluster programming and electronic messages received by the cluster from the Controller Antilock Brake (CAB) and the Transmission Control Module (TCM) over the Controller Area Network (CAN) data bus.
The ESP/BAS indicator Light Emitting Diode (LED) is completely controlled by the instrument cluster logic circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit. Therefore, the LED will always be OFF when the ignition switch is in any position except ON or START. The LED only illuminates when it is provided a path to ground by the instrument cluster transistor. The instrument cluster will turn ON the ESP/BAS indicator for the following reasons:
  1. Bulb Test- Each time the ignition switch is turned to the ON position the ESP/BAS indicator is illuminated for about four seconds as a bulb test.
  2. ESP/BAS Indicator Lamp-On Message- Each time the cluster receives an electronic ESP/BAS indicator lamp-ON message from the CAB indicating that the ESP/BAS system has been activated, the ESP/BAS indicator will be illuminated. The indicator remains illuminated until the cluster receives a lamp-OFF message from the CAB, or until the ignition switch is turned to the OFF position, whichever occurs first.
  3. ESP Full Off Textual Message- Each time the cluster receives an electronic ESP Full OFF indicator lamp-ON message from the CAB indicating that the ESP/BAS system has been manually disabled, an ESP OFF textual message will appear within the cluster odometer display. The ESP OFF textual message remains displayed until the cluster receives a lamp-OFF message from the CAB, or until the ignition switch is turned to the OFF position, whichever occurs first.
  4. Actuator Test- Each time the cluster is put through the actuator test, the ESP/BAS indicator will be turned ON, then OFF again during the bulb check portion of the test to confirm the functionality of the LED and the cluster control circuitry.
The CAB continually monitors the ESP/BAS circuits and sensors to decide whether the system is in good operating condition and the proper outputs to the components of the system. The CAB then sends the proper lamp-ON or lamp-OFF message to the Electro Mechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN).
For proper diagnosis of the ESP/BAS system, the CAB, the TCM, the EMIC, the CAN data bus or the electronic communication related to the ESP/BAS indicator operation a diagnostic scan tool is required. Refer to the appropriate diagnostic information.

Apr 11, 2016 | Dodge Cars & Trucks

1 Answer

The esp bas, abs, traction & brake light come on when I drive


take it to a mechanic! the drive train is failing

Jun 09, 2015 | 2008 Dodge Grand Caravan

3 Answers

I have a 09' routan 147k .What could cause these 4 lights to come on? Brake, abs, esp bas, and traction lights happens as soon as I start to drive


All involve brakeing system. I would take it to my dealer without delay, driving very carefully. These systems need to be working for your and your fellow drivers safety.

Apr 27, 2015 | 2009 Volkswagen Routan

1 Answer

I have a 2000 Mercedes E430 base sedan. Last week I replaced the brake light switch because it was out and it solved the problem to the point that I can now put my car into gear and drive it, however, as...


Brake light switch problem may cause the ESP / BAS lights to illuminate.

Common symptoms of a bad
Mercedes brake light switch.
  • Car stuck in Park.
  • ABS ESP ETS lights come on.
  • Can not move the shifter from Park to Drive.
  • Brakes Defective Warning on Instrument Cluster
  • Car won't shift gears. Stuck in 2nd gear, limp mode.
  • Brake lights don't work. (Brake light switch can still be defective even if the brake lights work. Checking the brake light operation is not a good test.)
  • ESP, BAS, ABS lights turn on. Car won't shift properly. Stuck in gear.


TEST: To test your new brake light switch: Turn you car off to reset the ABS light. apply the parking brake. and start the car in neutral or park without using the brake. if the problem is the brake light switch... the light will only come on when you press the brake pedal.

If you replaced the brake light switch and the light is still on you should check a few other things such as:

  • Fuses and Relays
  • ABS pump
  • ABS wheel speed sensor
  • Brake Fluid Level
  • Get an advanced scanner to read trouble codes.


NOTE: ** You may need a MBZ scan tool to reset the error code which was stored in the ECU because of the bad brake light switch.

Feb 25, 2015 | 2000 Mercedes-Benz E-Class

1 Answer

2008 dodge charger ESP/BAS and traction light on


Have the brakes inspected for worn out brake pads causing a metal to metal scrape of the pad and brake rotor.

Mar 20, 2014 | Dodge Charger Cars & Trucks

1 Answer

What does 'BAS ESP' mean? its come up on my dash-board on my car


Brake Assist System, Electronic Stability Programme. It will need to go on a computer, the most obvious thing is the brake light switch, fault will need to be erased after fixed.

Jul 13, 2009 | 2008 Mercedes-Benz Mercedes Benz C Class

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