Mercedes-benz Ml430 2001

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Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

• Brake lamp switch failure. investigation # PE10050

  Odi opened the investigation based on reports that the subject vehicle brake lamp switch (switch) failure caused 1) inoperative brake lamps (stay on or fail to illuminate), and/or 2) shift interlock failure (shifter locked in park), and/or 3) the cruise control to fail to cancel with brake application.Consumers also reported the illumination of a warning lamp on the instrument panel.The switch contains three sets of electrical contacts and a (normally extended) spring loaded plunger that actuates the contacts as it moves.As installed in the vehicle, the plunger contacts the brake pedal arm and is pushed into the switch; as the driver applies the pedal the plunger extends.One set of contacts (bls) operates the stop lamps, a second set (ewm) controls the shift interlock system, and a third set (bs) is used by an on-board diagnostic (obd) system to monitor switch operation.The cruise control monitors the bls signal to determine when the brake is applied, the primary way the system is disabled when set.The relative timing of contact actuation in response to plunger movement allows the obd system to detect a switch fault.When a fault is detected a malfunction indication lamp (mil) is illuminated (driver alert), a diagnostic trouble code (dtc) is stored (for the service technician), and cruise control operation is inhibited (as a failsafe).In its response to odis january 2011 information request letter, mb explained its assessment of switch failures which was based primarily on evaluation of field return failures.Mb identified both 1) electrical contact and 2) mechanical switch failure mechanisms.According to mbs analysis, electrical contact failure is the predominate failure type and the failure consequence depends on which contact fails.For instance mb claims that bls contact failures are momentary in nature and do not affect brake light operation but are nonetheless detected by the obd system, resulting in a dtc and subsequent replacement.Electrical contact failures of the bs and ewm contacts result in a dtc also, and ewm contact failures result in the shifter being stuck in the park (which can be overridden by the consumer).Accordingly mb maintains that electrical contact failures of the switch have no safety consequence since the brake lamps remain operational and the cruise control is always disabled.Mb determined that mechanical failures of the switch, which are rare in their assessment, can result from internal wear and/or increased switch operating temperatures.High temperatures occur due to overheating of the bls contacts and can cause the internal plastic components to melt.In one scenario overheated bls contacts may melt to the extended plunger and are damaged when the brake pedal is released resulting in the brake lights staying on.In another scenario the increased temperatures and/or internal wear can cause the plunger to stick in the fully depressed position.In this case the cruise may not cancel when the brake is applied and the driver may have to use high brake pedal forces or other means (shifting to neutral or using the cruise master switch) to disengage the cruise.Additionally the vacuum assist can be depleted if the driver pumps the brakes resulting in reduced braking effectiveness and even higher pedal forces.In its march 31, 2011 defect notification, mb stated that to remediate the potential need for excessive brake force it would conduct a safety recall (11v-208) to replace the switch with a more robustly designed component.The recall includes 136,751 model year 2000 - 2002 m-class and model year 2000 - 2004 m-class amg vehicles.Owner notification letters will be mailed to consumers in september 2011.This action taken by mb is sufficient to resolve the issues raised by this investigation.
  

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• Brake line chafe investigation # EA08009

  Analysis of complaints to odi and mercedes and warranty claim data submitted by mercedes indicates that the alleged defect has occurred at a low rate (36.5 complaints per 100,000 vehicles and 0.29 percent warranty claim rate), with no discernable defect trend indicating that the rate of chafing related brake line failures is increasing.There have been no new complaints since january 2009.When the analysis is limited to incidents of brake line leakage that resulted in allegations of reduced brake effectiveness, the rate drops even further (22.3 complaints per 100,000 vehicles and 0.04 percent warranty claim rate). Mercedes provided data showing that in the rare instances when chafing did progress to brake line leakage the driver would be immediately alerted to a problem by illumination of the bright yellow "esp/bas" warning lamp and changes in brake pedal feel.Continued operation with a leaking brake line would result in illumination of the bright red "brake" warning lamp and an audible chime due to low master cylinder reservoir level. Continued operation with the brake warning lamp illuminated would ultimately drain the reservoir for the affected circuit, resulting in loss of the circuit and an approximately 80% increase in stopping distances. Surveys conducted by odi and vrtc indicate that routing anomalies may be more common than the complaint and warranty data suggest for the subject line bundle, with line contact or other routing anomaly noted in 13 of 51 vehicles surveyed by odi and vrtc (25.5%).While evidence of contact between the fuel line and subject brake in a particular vehicle is not necessarily predictive of eventual line failure/leakage, significant chafing wear was noted in two survey vehicles (3.9%).To address concerns with line routing and ensure that lines with evident chafing do not progress to a leak condition, mercedes will conduct an owner notification program instructing owners to bring the vehicles to a dealer for a free inspection and repair.Lines that do not have a spacer (rubber grommet or omega-clip) between the subject fuel and brake lines will have an omega-clip spacer installed to ensure adequate clearance between the lines.Brake lines with chafe marks will be replaced. Accordingly, this investigation has been closed. The closing of this investigation does not constitute a finding by nhtsa that a safety-related defect does not exist. The agency will continue to monitor complaints and other information relating to the alleged defect in the subject vehicles and take further action in the future if warranted. For additional information regarding this engineering analysis refer to the ea08-009 closing report.
  

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• Electronic stability control malfunction investigation # PE07007

  Odi opened pe07-007 after receiving 4 complaints within a 6 week period alleging incidents of uncommanded brake application in model year (my) 2000 through 2001 mercedes m class sport utility vehicles.Information contained in the reports or gathered in subsequent consumer interviews indicated that the incidents were caused by faults in the electronic stability program (esp) system which were repaired by replacing the yaw rate sensors.Although the same yaw rate sensor is used in approximately 800,000 other mercedes m-class, c-class and slk models, to date there has been only one related complaint to odi in those vehicles. During this investigation mercedes benz provided odi with 327 complaints related to the esp system in the my 2000 through 2001 m class vehicles.Seven of the complaints submitted by mercedes alleged incidents of uncommanded brake activation while driving, with two of these involving vehicles identified in the odi complaints.None of the incidents resulted in crash or injury.However, the owners did express safety concerns due to the sudden, unexpected change in vehicle speed and direction. On may 10, 2007 mercedes benz met with nhtsa to provide a technical presentation and conduct a driving demonstration of the esp system performance with simulated electrical faults in the yaw rate sensor.Mercedes showed that the esp system is programmed to diagnose electrical faults and that brake applications resulting from yaw rate sensor electrical faults are very short in duration (0.3 seconds or less) and do not affect vehicle control or stability. Nine of the consumer complaints to odi and mercedes alleged brake activations longer than 0.3 seconds, with several alleging that the incident lasted until the vehicle came to a stop.A complaint vehicle that alleged multiple incidents was evaluated by odi at the vehicle research and test center (vrtc) in east liberty, ohio.Vrtc was unable to duplicate the condition.Due to the low complaint rate and only one new complaint to odi or mercedes since january 2007, this investigation has been closed.Odi will continue to monitor complaints in the subject vehicles and other mercedes products using the same yaw rate sensor and mercedes will provide updates on field experience (complaints, field reports and warranty claims) through the end of 2007.
  

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Re: 2001 mb ml430 electronic braking sensor the front passenger brake initially locked up at low speed upon acceleration. After stopping and turning the vehicle off and back on the system was back to normal. Then one day i was traveling at near 70 mph in the passing lane of an interstate highway when the front driver brake locked up and brake tire smoke billowed from my vehicle which caused traffic behind me to swerve and brake behind and on the side of me. I proceeded to pull off onto the shoulder of the highway and turned my vehicle off and back on, after which my vehicle operated normally. I proceeded to do an online search and learned that this was a common sort of problem for this model.. Particularly at low speeds. In my case it happened at low speeds and then the one time at 70 mph. I learned that the yaw sensor which is part of the abs system was commonly reported as the likely cause of the problem.. I proceeded to disconnect the yaw sensor and have had no further problems. I am fortunate that it was not a rainy day, otherwise the results may have been catastrophic with so many vehicles behind me and traveling at such a high speed. Theyaw sensor mb part # is a 002 542 94 18 q01 systron donner inertia division usa

Twice now while driving and going over minor bumps (dots on the road to warn of crosswalks and a driveway entrance curb) the bas/esp and hazard lights have come on and the car has automatically applied violent breaking that took control of the direction the car was heading. This breaking continued until the vehicle came to a complete stop. Both times the car was going less than 20 mph, but control of the car was limited during the event. At freeway speeds, it would be very likely to cause an accident. Bas/esp light turns off after the car is turned off.

I was driving on the highway, going about 60 mph, and the car suddenly started applying the brakes on its own. Nearly got me into an accident. I was able to get over to the shoulder luckily. I had my toddler in the car and it was a very scary thing. When the brakes started engaging by itself, a yellow triangle warning light displayed on the dash followed by the bas/esp light after the vehicle came to a complete stop. I have seen others that have had this very same issue and seems to be the yaw rate sensor. I am shocked this hasn't been recalled with all the issues i've read on this. I barely just bought the car and it's already not drivable. Very huge safety issue.

Vehicle's front wheel brakes by itself while driving and the eps warning light comes on afterwards. Extremely dangerous in highway driving. Had the brakes checked, but nothing wrong. Online complaints suggests a failure in yaw rate sensor.

The all activity module (aam) does not function properly to which neither side mirrors can be adjusted because the windows no go up and down or longer operate. Then the door locks no longer functions and various other components rely solely off of this middle instrument cluster. When i took it to the dealer they said there is a malfunction in the aam controls which are the causing affect of this issue.

2001 mercedes benz ml 430. Consumer writes in regards to vehicle brake pedal issues. *smd the consumer stated the brake pedal lost pressure due to the fuel tube coming in contact with the brake line. The brake line was leaking fluid.*jb

I was driving on interstate 285 east at a speed of 70mph suddenly the the bas/esp warning light came on and my car automatically applied brakes and the car couldn't run. So i turned of the engine and started the car again and everything went back to normal except the cruise control stopped working and bas/esp waring lights are still on but the car is running. How do i fix the cruise control and the bas/esp warning lights?

Tl* the contact owns a 2001 mercedes benz ml430. The contact stated that the service engine and the bas esp warning lights flickered. The contact mentioned that when the warning lights illuminated, the brakes engaged and there was an abnormal noise. In addition, the electric power door lock function was making an abnormal noise. The contact discovered that the a/c line fractured and the windshield wipers plastic piece fractured. The vehicle was not diagnosed or repaired. The vehicle was included in nhtsa campaign number: 11v208000 (vehicle speed control). The manufacturer was notified of the failure. The approximate failure mileage was 186,675. Updated 11/23/15*lj the consumer fixed the vehicle at his/her expense. Updated 01/29/16.*jb

There is an active recall for the all activity module on 2001 m class vehicles. There is an extensive amount of data that owners from the release of the mercedes benz ml430 have had problems identical to those in the active recall. When i call mercedes, they say my car is not impacted. Based on the number of issues and history on 2001 m class all activity modules, i feel this recall should extend to all 2001 m class cars.

Common OBD-II Error Codes

• U1454 [1] U1454
• C1200 [1] ABS Inlet Valve Coil LF Circuit Short To Battery
• C1208 [1] ABS Inlet Valve Coil Rear Circuit Short To Battery