2001 Mercedes-Benz C240

The contact owns a 2001 Mercedes-Benz C240. The contact stated that he was made aware of the NHTSA Campaign Number: 191V18000 (Visibility) after the vehicle was taken through inspection. Additionally, the contact stated that the sliding roof failed to close as designed. As a result, the contact had to remotely open and close the sliding sunroof repeatedly until properly closed. No warning lights were illuminated. The vehicle was taken to the dealer where the vehicle was denied the recall repair however, the contact stated that the vehicle had not been inspected. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage 140,000.

NHTSA ID

11522525

Incident

May 10, 2023

Mileage

140,000 mi

THE PANORAMIC SUNROOF ON MY 2001 MERCEDES BENZ C240 SHATTERED OR EXPLODED WHILE I WAS DRIVING AT A HIGHWAY SPEED OF 55 MPH. IT SOUNDED LIKE A GUNSHOT AND THE GLASS WAS SHATTERED OVER THE PASSENGER AND REAR SEATS. NO ONE WAS SITTING IN THOSE SEATS FORTUNATELY. MERCEDES DEALER SAYS THERE IS NO RECALL OR WARRANTY FOR THIS SAFETY ISSUE TO DATE. I WILL HAVE TO PAY OUT OF POCKET $1500.

NHTSA ID

11399816

Incident

Mar 8, 2021

Mileage

87,400 mi

TL* THE CONTACT OWNS A 2001 MERCEDES-BENZ C240. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V918000 (VISIBILITY) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. *BF CONSUMER STATED WHENEVER SUNROOF IS OPEN NOISE COULD BE HEARD.*JB

NHTSA ID

11329200

Incident

Feb 26, 2020

MY 2001 MERCEDES-BENZ C240 ENGINE COOLING OR SUCTION FAN RUNS CONSTANTLY AT HIGH SPEED NONSTOP AT STARTUP UNTIL VEHICLE IS TURNED OFF. VEHICLE WAS INSPECTED BY DEALER WHO DIAGNOSED THAT THE ELECTRONIC CONTROL UNIT / MODULE (ECU / ECM) OR COOLING / SUCTION FAN WAS BAD AND NEEDED REPLACEMENT. I REPLACED THE ECU 5 TIMES AND THE COOLING / SUCTION FAN ONCE RELYING ON DEALER'S DIAGNOSES. MY C240 WOULD WORK FOR A WHILE BUT THE FAN WOULD MALFUNCTION AGAIN RUNNING CONSTANTLY AT HIGH SPEED. I NOTIFIED MERCEDES BENZ USA OF MULTIPLE FAN MALFUNCTIONS AND THE DEALER'S INABILITY TO FIX THE PROBLEM. I WAS TOLD TO FIND ANOTHER DEALERSHIP IF PROBLEM REOCCURRED. THE PROBLEM REOCCURRED 4 MONTHS LATER WHICH I TOOK C240 TO ANOTHER DEALERSHIP FOR REPAIRS. THIS OTHER DEALERSHIP DIAGNOSED THAT THE ECU WAS BAD AND FOUND A 2004 TECHNICAL SERVICE BULLETIN (TSB) P-B-20.40/26A THAT ADDRESSES THE SPECIFIC ISSUE WITH MY VEHICLE. TSB STATES PROBLEM MAY BE CAUSED BY THE WIRING HARNESS BETWEEN THE ECU AND ENGINE FAN OR THE ENGINE CONTROL UNIT FAN END STAGE MALFUNCTIONING. THERE MAYBE A CODE P2073 (004). THE ADAPTER WIRING HARNESS PART NUMBER IS A209 540 56 35. THE VEHICLE WAS REPAIRED ACCORDING TO THE TSB WHICH SAYS TO CHECK WIRE CONTINUITY, REPLACE ECU, AND INSTALL HARNESS ADAPTER ONLY. MY FAN WAS ALSO REPLACED ALTHOUGH TSB DID NOT STATE TO REPLACE FAN. NO ADDITIONAL TEST WAS PERFORMED TO SHOW THAT FAN WAS BAD. IT WAS REPLACED TO WARRANT THE ECU. MERCEDES-BENZ USA SAYS MY C240 IS NOT COVERED BY TSB P-B-20.40//26A OR P-B-20.40/33 AND NO OTHER TSB EXIST THAT SPECIFICALLY ADDRESS THIS SAME ISSUE FOR MY VEHICLE. I HAVE FOUND MANY C240 AND C-CLASS (W203) OWNERS' COMPLAINTS ABOUT THE EXACT SAME PROBLEM BEYOND THE MODELS MENTIONED IN THE ABOVE 2 TSBS. MERCEDES BENZ IS CONCEALING THAT TSBS EXIST TO ADDRESS SAME ISSUE WITH C240 AND OTHER W203 VEHICLES OR IT WAS AWARE OF PROBLEM FROM CONSUMER COMPLAINTS.

NHTSA ID

11192785

Incident

Aug 13, 2013

IN DECEMBER 2017, I WAS DRIVING ALONG A CITY STREET WHEN THE DRIVER'S FRONT AIRBAG SUDDENLY DEPLOYED. MY CAR WAS WELL-MAINTAINED, WITH MILEAGE OF 28,520. IT APPEARS THE SUSPENSION (LOWER BALL JOINT) ON THE RIGHT SIDE FAILED, CAUSING THE RIGHT FRONT TIRE TO BLOW OUT AND CAUSING DAMAGE TO THE LEFT FRONT TIRE AS WELL. THERE WAS NO COLLISION, YET THE AIRBAG DEPLOYED WITH AN EXTREMELY LOUD BANG THAT SERIOUSLY DAMAGED MY HEARING, PERHAPS PERMANENTLY. AN ONLINE SEARCH INDICATES THAT MERCEDES HAS HAD PROBLEMS WITH AIRBAGS DEPLOYING UNNECESSARILY, BUT I HAVE NEVER RECEIVED NOTICE OF A RECALL.*JS

NHTSA ID

11061484

Incident

Dec 19, 2017

Mileage

28,520 mi

ESP LIGHT, INSTRUMENT CLUSTER FADING, ACCELERATION SENSOR AND MULTIPLE LEAKS IN THE ENGINE, POWER STEERING, AXEL SEAL, SPARK PLUGS VALVE LEAKS, OIL LEAKS, TRANS BELL. THE CAR WAS BROUGHT IN FOR AN ESP LIGHT THAT TURNS ON ONCE THE CAR IS IN MOTION, A BURNING SMELL THAT COMES THROUGH THE CAR. MULTIPLE LEAKS DISCOVERED AND THE CLUSTER LIGHTING ALSO FADES OUT ONCE THE CAR HAS BEEN RUNNING FOR A WHILE MAKING THE READINGS UNREADABLE. BENZEL AND BUSCH GENERATED A DIAGNOSTIC THAT DISCOVERED MANY PROBLEMS WITH THE CAR. MBUSA WAS ALSO NOTIFIED OF THE CONCERNS WITH THE ESP LIGHT, THE FADING OF THE INSTRUMENTS AND THE MULTIPLE LEAKS FOR A CAR THAT HAS LESS THAN 55K AND HAS HAD ALL PROPER MAINTENANCE DONE. THEY REFUSED TO CONSIDER ALTHOUGH OTHER VEHICLES SAME YEAR AND MODEL HAD HAD RECALLS FOR SOME OF THESE ITEMS.

NHTSA ID

11005283

Incident

Jun 30, 2017

Mileage

1 mi

NORMAL DRIVING CONDITIONS, THEN VEHICLE AUTOMATICALLY SLAMS ON BRAKES (SOMETIMES ALL 4 WHEELS, SOMETIMES ONLY 1 WHEEL--WHICH CAUSES VEHICLE TO YAW). AT FIRST, THIS PROBLEM WOULD ONLY OCCUR AFTER DRIVING FOR ABOUT 40 MINUTES. NOW IT CAN HAPPEN UP TO 3 MINUTES AFTER STARTING VEHICLE. ON 1 OCCASION SYSTEM CAUSED THE WHEELS TO SKID FOR ABOUT ONE SECOND, WHICH MADE ME LOSE TRACTION. PROBLEM HAPPENS ONLY WHEN VEHICLE IS IN MOTION. INDEPENDENT OF WHETHER ON HIGHWAY OR IN A TURN.

NHTSA ID

10854486

Incident

Apr 8, 2016

Mileage

107,000 mi

TL* THE CONTACT OWNS A 2001 MERCEDES BENZ C 240. THE CONTACT STATED WHILE DRIVING 5 MPH, THE BRAKE LIGHTS ILLUMINATED AND EXCESSIVE FORCE WAS REQUIRED IN ORDER TO ACCELERATE. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC. THE TECHNICIAN DIAGNOSED THAT THE ESP CONTROL NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 170,000.

NHTSA ID

10654596

Incident

Apr 1, 2014

Mileage

170,000 mi

Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to micromovement in the connection between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened and must be tightened to the specified torque. Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove outboard side shafts (extract outer joint gearing from wheel hub) 2. Clean contact surface A (see picture file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") using Molykote and leave to dry for one hour in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir or shake it well (for at least 1 minute).

Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to micromovement in the connection between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened and must be tightened to the specified torque. Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove outboard side shafts (extract outer joint gearing from wheel hub) 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") using Molykote and leave to dry for one hour in removed condition 4. Reinstall side shafts

Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy Check for external damage: You can identify a damaged headlamp in the following way: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent, then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: External damage to the headlamp does not present a warranty or goodwill case. 1. Clear fogged/condensed LED headlamps and LED rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). 7. If the condensation has disappeared, nothing else has to be done. Note: If defrosting has been performed, you can skip the first step. 2. Leak test of headlamp with overpressure: • Connect test adapter to pressure tester. (Figure 1) • Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. • All vents have to be sealed with sealing compound and the existing diaphragm with the stamp (picture 3 [3]). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). • Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. • Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). • Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged (picture 6). • If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is tight and there is natural physical condensation. • If a higher pressure drop than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. If the pressure test is not passed, the headlamp is leaky. If the cause cannot be rectified, the headlamp must be replaced. Note: If the headlamp is replaced, no dry packs may be installed on the new replacement headlamp. AR82.10-P-5455WT was created for the pressure test. This AR can be used as a reference manual for all closed headlamps. In the event of an open headlamp system, the vent ducts must be sealed before the pressure test.

Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Remedy NOTE: If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 °C/+64.4 °F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for damage. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078896 The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions.

Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant flow in the heater heat exchanger (see picture). Remedy With the aforementioned complaint, make sure that the cooling circuit is inspected for silicate residues after all standard tests are completed. The silicate residues tend to accumulate upstream of the shutoff valve for the heater hot water pulsed valve. If there are silicate residues in the coolant, the engine must be flushed thoroughly. To make sure that all silicate residues are removed from the cooling circuit, the following parts must also be replaced (cleaning of these components is not sufficient): Coolant expansion reservoir, radiator, oil/water heat exchanger (oil cooler), heater valve, heat exchanger of heater, coolant and, if installed, the electric water pump for the residual heat utilization system. Determine the parts for the respective vehicle in the EPC.

Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: • It is recommended to replace the cover caps. • The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.