IllustrationHARMONIC BALANCER/VIBRATION DAMPNER ON ML430 MERCEDES-BENZ DEFECTIVE.*AK
1999 Mercedes Benz ML430
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all ML430 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
20–25K
025–50K
1350–75K
875–100K
6100–150K
2150K+
31 reports with mileage · 13 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Steering. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports0 fire reports2 injury reports
What owners actually said
44 reportsMERCEDES BENZ 1999 ML 430. HARMONIC BALANCER FAILED. DRIVING 65+ ON THE MASS. PIKE, THE POWER STEERING FAILED, AND THEN THE ENGINE BEGIN TO OVERHEAT. THE VEHICLE HAD TO BE WRESTLED FROM THE LEFT LANE, ACROSS 3 VERY BUSY LANES OF TRAFFIC TO THE SIDE OF THE HIGHWAY. THE STATE POLICE WERE CALLED AND THE VEHICLE WAS TOWED. I LA…
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MERCEDES BENZ 1999 ML 430. HARMONIC BALANCER FAILED. DRIVING 65+ ON THE MASS. PIKE, THE POWER STEERING FAILED, AND THEN THE ENGINE BEGIN TO OVERHEAT. THE VEHICLE HAD TO BE WRESTLED FROM THE LEFT LANE, ACROSS 3 VERY BUSY LANES OF TRAFFIC TO THE SIDE OF THE HIGHWAY. THE STATE POLICE WERE CALLED AND THE VEHICLE WAS TOWED. I LATER LEARNED THAT THE CRANK SHAFT PULLEY HAD BROKEN APART AND CAUSED A CHAIN REACTION OF FAILURES ULTIMATELY LEADING TO THE ABOVE. * CB
I OWN A 1999 MERCEDES BENZ ML430 SUV. WHILE DRIVING MY VEHICLE TO WORK ON THE HIGHWAY, IT LOST COMPLETE POWER AND POWER STEERING. THANK GOD I WAS OPERATING THE VEHICLE AND NOT MY WIFE, WITH INFANT CHILD. AFTER BEING DIAGNOSE BY MY LOCAL MERCEDES BENZ DEALERSHIP WITH A FAULTY HARMONIC BALANCER, CAUSING DAMAGE TO THE BELTS, OIL PA…
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I OWN A 1999 MERCEDES BENZ ML430 SUV. WHILE DRIVING MY VEHICLE TO WORK ON THE HIGHWAY, IT LOST COMPLETE POWER AND POWER STEERING. THANK GOD I WAS OPERATING THE VEHICLE AND NOT MY WIFE, WITH INFANT CHILD. AFTER BEING DIAGNOSE BY MY LOCAL MERCEDES BENZ DEALERSHIP WITH A FAULTY HARMONIC BALANCER, CAUSING DAMAGE TO THE BELTS, OIL PAN, TIMING CHAIN COVER, ETC, I WAS ADVISED BY MY SERVICE REP THAT MERCEDES BENZ OF USA IS VERY AWARE OF THIS HAZARDOUS/DANGEROUS CONDITION AND THAT THEY HAVE REPLACED MANY HARMONIC BALANCERS UNDER WARRANTY BUT THEY (MB USA) WILL NOT COVER ASSUME RESPONSIBILITY FOR VEHICLES OUT OF WARRANTY. MY VEHICLE HAD 55,000 MILES AT THE TIME. I THANK YOU FOR YOUR TIME AND I HOPE THAT OUR COMPLAINTS WILL LIGHT A FIRE UNDER MB USA'S BEHIND. *CB
MERCEDES BENZ (MB) HAS A DEFECTIVE HARMONIC BALANCER WHICH THEY WILL NOT PROVIDE REPLACEMENT FOR WILLINGLY. THEIR OFFICIAL LINE IS THAT THEY "HAVE NO POLICY" WITH REGARD TO THIS. THE PART IN QUESTION IS ON "NATIONAL BACKORDER" I WAS TOLD BY 2 DIFFERENT SOURCES. MB WAS CONDESCENDING & RUDE WHEN I INQUIRED ABOUT THIS. THEIR DEA…
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MERCEDES BENZ (MB) HAS A DEFECTIVE HARMONIC BALANCER WHICH THEY WILL NOT PROVIDE REPLACEMENT FOR WILLINGLY. THEIR OFFICIAL LINE IS THAT THEY "HAVE NO POLICY" WITH REGARD TO THIS. THE PART IN QUESTION IS ON "NATIONAL BACKORDER" I WAS TOLD BY 2 DIFFERENT SOURCES. MB WAS CONDESCENDING & RUDE WHEN I INQUIRED ABOUT THIS. THEIR DEALERSHIPS PROVIDE NO HELP. FAILURE OF THIS PART CAN BE DANGEROUS. I HAVE FILED REPORTS WITH MY STATE ATTORNEY GENERAL & THE BBB. A RECALL IS NECESSARY IMMEDIATELY!! P.S. (THE FUEL GAGE DOES NOT READ FULL EVER!) *LA
THE HARMONIC BALANCER ON ALL MERCEDES BENZ V6 AND V8 ENGINES BETWEEN 1995 AND 1999 IS DEFECTIVE. MB KNOWS ABOUT THIS PROBLEM AND REFUSES TO ACKNOWLEDGE THE PROBLEM. WHEN THE $100 DEFECTIVE PART FAILS AROUND 50K MILES IT CAUSES $2K-3K IN DAMAGE. PLEASE SEE THE SITE MERCEDESSHOP.COM TO VIEW THE NUMBER OF COMPLAINTS. I HAVE SPO…
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THE HARMONIC BALANCER ON ALL MERCEDES BENZ V6 AND V8 ENGINES BETWEEN 1995 AND 1999 IS DEFECTIVE. MB KNOWS ABOUT THIS PROBLEM AND REFUSES TO ACKNOWLEDGE THE PROBLEM. WHEN THE $100 DEFECTIVE PART FAILS AROUND 50K MILES IT CAUSES $2K-3K IN DAMAGE. PLEASE SEE THE SITE MERCEDESSHOP.COM TO VIEW THE NUMBER OF COMPLAINTS. I HAVE SPOKEN TO MBUSA CUSTOMER SERVICE, THE M-B AREA MANAGER, RON ST.PIERRE, AND DREHER-HOLLOWAY SERVICE MANAGER, MIKE BELLAIGERON. ALL REFUSE TO REPLACE THESE DEFECTIVE ITEMS. M-B RE-DESIGNED THE PART IN 2001 AND ISSUED A TECHNICAL BULLETIN IN DEC 2001 DIRECTING SERVICE TECHCNICANS TO REPLACE THE PART WITH A NEW STOCK NUMBER. THEY KNOW THE PROBLEM EXISTS BUT WAIT FOR THE FAUILURES BECUSE THEY GET MORE REVENUE FROM REPAIRING THE DAMAGE CAUSED BY THE FAILURE. *AK
THE VEHICLE STALLS AT ANY SPEED WITHOUT WARNING. CONSUMER CONTACTED DEALER ON SIX SEPARATE OCCASIONS, BUT THE PROBLEM STILL OCCURS. *AK
THE HARMONIC BALANCER ON THE CRANKSHAFT OF MY MERCEDES ML430 VIN# 4JGAB72E7XA09375 FAILED W/O WARNING CAUSING THE FAN BELT TO FAIL AND THE BALANCER STARTED CUTTING A HOLE IN THE OIL PAN. THIS FAILURE JUST BY "LUCK" DID NOT CAUSE A MOVING ACCIDENT DUE TO LOSS OF ELECTRICAL AND POWER STEERING, OR AN UNDER THE HOOD FIRE. THIS C…
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THE HARMONIC BALANCER ON THE CRANKSHAFT OF MY MERCEDES ML430 VIN# 4JGAB72E7XA09375 FAILED W/O WARNING CAUSING THE FAN BELT TO FAIL AND THE BALANCER STARTED CUTTING A HOLE IN THE OIL PAN. THIS FAILURE JUST BY "LUCK" DID NOT CAUSE A MOVING ACCIDENT DUE TO LOSS OF ELECTRICAL AND POWER STEERING, OR AN UNDER THE HOOD FIRE. THIS COST ME $500 TO GET FIXED WHEN A $70 PART COULD HAVE BEEN REPLACED IF I HAD ONLY BEEN NOTIFIED OF THIS FREQUENT FAILURE ON MERCEDES MODELS LIKE MINE. THE DEALER WAS LITTLE HELP IN SOLVING THIS PROBLEM.*AK
HARMONIC BALANCER HAD DETERIORATED AND WAS REPLACED IN ORDER TO PREVENT SUDEN FAILURE AND/OR MAJOR DAMAGE TO THE ENGINE; PROBLEM SEEMS TO BE INCREASINGLY 'COMMON' AMONG ML OWNERS!*AK
I WAS DRIVING MY ML430 ON THE HIGHWAY WHEN ALL OF A SUDDEN MY POWER STEERING GAVE OUT AND MY CAR STARTED TO OVERHEAT. I MANAGED TO "STRONG ARM" THE CAR, (HOPPED A CURB MID-TURN) AND PULL OVER INTO A LOCAL GROCERY STORE. WHAT MY DEALER HAD DIAGNOSED WAS THAT THE HARMONIC BALANCER WAS DISCONNECTED AND THE CRANKSHAFT PULLEY ASSEMBL…
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I WAS DRIVING MY ML430 ON THE HIGHWAY WHEN ALL OF A SUDDEN MY POWER STEERING GAVE OUT AND MY CAR STARTED TO OVERHEAT. I MANAGED TO "STRONG ARM" THE CAR, (HOPPED A CURB MID-TURN) AND PULL OVER INTO A LOCAL GROCERY STORE. WHAT MY DEALER HAD DIAGNOSED WAS THAT THE HARMONIC BALANCER WAS DISCONNECTED AND THE CRANKSHAFT PULLEY ASSEMBLY CAME APART. I'M AFRAID THAT IF MY WIFE HAD BEEN DRIVING THE CAR AT THE TIME THE CIRCUMSTANCES MAY HAVE BEEN MORE SEVERE. SINCE THE PULLEY CAME APART AT SUCH FORCE IT ALSO MANAGED TO RIP A HOLE INTO MY OIL PAN. ALL IN ALL I'M LOOKING AT A $3000 REPAIR TO A POTENTIALLY DEADLY PROBLEM. WHEN I CONTACTED THE DEALERSHIP THEY TOLD ME THAT THIS WAS A COMMON PROBLEM AND OFFERED TO PRESENT THE ISSUE TO MB AND REQUEST HELP FOR THE REPAIR. "COMMON PROBLEM!" .. I THOUGHT TO MYSELF. MB CAME BACK WITH NO ASSISTANCE SINCE THE CAR WAS OUT OF WARRANTY. I DON'T UNDERSTAND THE LACK OF RESPONSIBILITY AND OWNERSHIP MB IS TAKING ON THEIR BRAND. THE WHOLE REASON I PURCHASED THE CAR WAS FOR QUALITY. I'M SADDENED TO WONDER HOW MANY LIVES ARE POTENTIALLY IN DANGER DUE TO THIS COMMON PROBLEM AND WHAT IT WOULD TAKE FOR MB TO BECOME PROACTIVE AND TAKE RESPONSIBILITY. *LA
LTR INQUIRING ON THE STATUS OF A COMPLAINT FILED IN AUGUST 2003 (#10031122) RE THE DEFECTIVE TRANSMISSION IN HIS MERCEDES BENZ ML 430 SPORT UTILITY VEHICLE.*MR THE VEHICLE TRANSMISSION FAILED WHILE PULLING OUT OF A PARKING SPACE. THE TRANSMISSION IS SEALED (NO DIPSTICK) SO THERE IS NO WAY FOR THE CONSUMER TO CHECK THE FLUID LE…
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LTR INQUIRING ON THE STATUS OF A COMPLAINT FILED IN AUGUST 2003 (#10031122) RE THE DEFECTIVE TRANSMISSION IN HIS MERCEDES BENZ ML 430 SPORT UTILITY VEHICLE.*MR THE VEHICLE TRANSMISSION FAILED WHILE PULLING OUT OF A PARKING SPACE. THE TRANSMISSION IS SEALED (NO DIPSTICK) SO THERE IS NO WAY FOR THE CONSUMER TO CHECK THE FLUID LEVEL. THE VEHICLES CATALYTIC CONVERTER FAILED AND THE BRAKE LINE RUPTURED. *NLM
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2EA08009 · Brake Line Chafe
Opened Apr 28, 2008 · Closed Dec 16, 2009
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings; Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
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.
Additional source detail variants (2)
Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings
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.
Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
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.
PE03058 · Engine Crankshaft Pulley Failure
Opened Dec 17, 2003 · Closed Apr 22, 2004
Status: closed (inferred from source dates) · Engine And Engine Cooling:engine:gasoline:belts And Associated Pulleys
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS PRELIMINARY EVALUATION TO INVESTIGATE ALLEGATIONS OF ENGINE CRANKSHAFT PULLEY HARMONIC BALANCER FAILURE THAT COULD RESULT IN LOSS OF POWER-STEERING ASSIST.ODI HAS RECEIVED A TOTAL OF 546 NON-DUPLICATIVE REPORTS THAT ALLEGE ENGINE CRANKSHAFT PULLEY HARMONIC BALANCER FAILURE ON ALL MERCEDES-BENZ VEHICLES USING THE SUBJECT COMPONENT.THE SUBJECT COMPONENT FAILURES ARE PROGRESSIVE IN NATURE AND ONLY A SMALL PERCENTAGE OF THE COMPLAINTS AND WARRANT CLAIMS INVOLVED A FAILURE THAT HAD PROGRESSED FAR ENOUGH TO EFFECT POWER STEERING PERFORMANCE (6 OF 55 ODI COMPLAINTS REFERENCE INCREASED STEERING EFFORT).THERE HAVE BEEN NO CRASHES OR INJURIES RELATED TO THE ALLEGED DEFECT.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE SUMMARY REPORT ATTACHED FOR FURTHER DETAIL.