RoadVitals

2004 Mercedes-Benz ML350

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
35
Latest Mar 22, 2023
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
0
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
6
3 injuries, 0 deaths reported

Overview

Our database contains 35 NHTSA owner-reported complaints for the 2004 Mercedes-Benz ML350, most frequently naming the steering, engine and airbags categories. 63 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Steering615.0%
  • Engine512.5%
  • Airbags512.5%
  • Fuel system410.0%
  • Interior & seats410.0%
  • Brakes410.0%
  • Electrical410.0%
  • Exterior lighting25.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

No recalls in our database for this model year

That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Filed Mar 22, 2023

OEM jack failed without warning. No injuries but it could have been bad. Car got stuck and spinning wheels dug into a region of hard packed snow over a gravel driveway at my father's house. I was using the jack to lift the wheels out of their holes so I could fill the hole with chunks of wood. To spread the load on the snow the base of the jack was on a roughly 10" long piece of 2x4, which was placed on a roughly 8x10 inch piece of plywood. Jack worked fine for the first 2 wheels. On the 3rd wheel the "thrust washer" that transfers force from the nut that rides on the main screw, to the hinged arm which picks up the car, split in half without warning. This resulted in a sudden and complete failure of the jack, dropping the car back to it's starting position.

NHTSA ID
11513149
Incident
Mar 13, 2023
Fuel system
Filed Sep 3, 2021

Hello my check engine light is on in my 2004 Mercedes ml350 so I took it to a Mercedes dealership for inspection and repairs. They kept my suv for 8 days and finally called me back and said they believe the check engine light is on because I need to replace my charcoal canister shut off valve. Now this component takes the gas vapors that has not been burned off and reroutes it through the charcoal canister and back into the engine so it can be burnt off and not enter the atmosphere and enter the inside of the vehicle. Well My suv has failed inspection for emissions and that’s why I brought it in to Mercedes. Well the service department at Mercedes called me 8 days later and said Mercedes does not make that part anymore. And no other aftermarket company makes it either. They charged me $200 to tell me they can’t fix it because the part is not made anymore. So am I safe ? Why Mercedes never recalled a vehicle that can not pass states emissions test. I wrote a letter to the head of Mercedes in Europe and the United States. They offered me $2,000 off of a new Mercedes or $1,000 off a Pre owned Mercedes. Sounds like they know something is not right here. So my complaint is can a car manufacturer stop producing a part that is needed to safely pass the emissions test and isn’t these fumes harmful to me and my family?

NHTSA ID
11431676
Incident
Aug 18, 2021
Airbags
Filed Jun 14, 2020

THE AIR BAG LIGHT CAME ON WHEN THE CAR HIT 170.000 MILES

NHTSA ID
11328774
Incident
Apr 29, 2017
Mileage
178,000 mi
Interior & seats
Filed May 16, 2019

FRONT SEATS GETS VERY HOT WHENEVER WE TURN ON THE SEAT WARMER OPTION. THIS STARTED TO HAPPEN AT LEAST FROM 5 TO 6 MONTHS. WE ARE SCARED IT MIGHT BURN OUR BACKS. THANKS

NHTSA ID
11208012
Incident
Jan 10, 2019
Mileage
100,000 mi
Steering
Filed May 21, 2018

LEAKAGE OF POWER STEERING FLUID COMING FROM HOSES, OR PIPE, OR SOME CONNECTION. I WAS ABOUT TO LEAVE WHEN I STARTED MY CAR ONLY TO HEAR A LOUD WHINING NOISE AND A HARD-TO-TURN STEERING WHEEL.

NHTSA ID
11097043
Incident
Apr 21, 2018
Mileage
162,000 mi
ElectricalExterior lighting
Filed Sep 18, 2017

DISCOVERED BRITTLE, BROKEN AND MISSING WIRING INSULATION ON THE HEADLIGHT WIRING INSIDE THE HEADLAMP ASSEMBLY. THIS WAS A DANGEROUS SITUATION THAT ALLOWED THE POSITIVE AND NEGATIVE WIRES TO COME IN CONTACT WITH EACH OTHER CREATING A SHORT.

NHTSA ID
11024117
Incident
Sep 18, 2017
EngineSteering
Filed Dec 21, 2016

TL* THE CONTACT OWNS A 2004 MERCEDES-BENZ ML350. WHILE DRIVING VARIOUS SPEEDS, THE POWER STEERING MALFUNCTIONED. THE STEERING WHEEL WAS DIFFICULT TO TURN AND THE STEERING FLUID HAD TO BE REPLACED SEVERAL TIMES. THE CONTACT STATED THAT THE STEERING WHEEL MADE A LOUD GRINDING NOISE WHEN IT WAS TURNED AND POWER STEERING FLUID LEAKED FROM THE COLUMN. IN ADDITION, THE CHECK ENGINE INDICATOR ILLUMINATED WITHOUT WARNING. IT WAS DIAGNOSED THAT THE POWER STEERING HOSE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.

NHTSA ID
10936803
Incident
Jun 20, 2016
Mileage
90,000 mi
Powertrain (other)
Filed Mar 17, 2016

TRANSMISSION DISENGAGES AT HIGHWAY SPEEDS

NHTSA ID
10850280
Incident
Mar 17, 2016
Mileage
165,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

LI35.30-P-058566

POWER TRAIN

Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. 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 cracking of the microweld 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. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 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") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

LI82.10-P-078301

EXTERIOR LIGHTING

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. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 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. 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 of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 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 condensation, check the headlamp for malfunctions. (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. Note: Only implement Remedy 1 for model series 463 (from model year 2018) and model series 465. Remedy 2 A defective 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 according to LI82.10-P-078307. 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. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. • Open ventilation system LI82.10-P-078302 • Closed ventilation system LI82.10-P-078304

LI82.10-P-078301

EXTERIOR LIGHTING

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. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 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. 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 of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 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 condensation, check the headlamp for malfunctions. (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. Note: Only implement Remedy 1 for model series 463 (from model year 2018) and model series 465. Remedy 2 A defective 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 according to LI82.10-P-078307. 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. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. • Open ventilation system LI82.10-P-078302 • Closed ventilation system LI82.10-P-078304

LI82.10-P-078301

EXTERIOR LIGHTING

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. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 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. 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 of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4°F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 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 condensation, check the headlamp for malfunctions. (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 defective 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 according to LI82.10-P-078307. 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. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. • Open ventilation system LI82.10-P-078302 • Closed ventilation system LI82.10-P-078304

LI33.30-P-056665

POWER TRAIN

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).

LI33.30-P-056665

POWER TRAIN

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

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Mercedes-Benz ML350 by model year
YearComplaintsRecallsInvestigationsIssue Index
2015525060.9
2014674060.8
2013565060.5
2012654054.3
20111103160.7
20101013155.6
2009933158.4
2008672050.4
2007832162.7
20061712051.3
2005230037.6
2004Viewing350039.1
2003250041.8
2001100

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.