2003 Mercedes Benz Ml500 problems, complaints & recalls
Most-reported problem areas: Steering (3) · Engine (3) · Service Brakes (2)
🧭 Reliability snapshot
Compared against other Mercedes Benz Ml500 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (60)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Structure:body 2026-08-06 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-07-14 · LI35.30-P-058566 · Service Bulletin/Repair Instructions
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 n
Exterior Lighting 2026-04-16 · LI82.10-P-078301 · Service Bulletin/Repair Instructions
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 l
Exterior Lighting 2026-03-09 · LI82.10-P-078301 · Service Bulletin/Repair Instructions
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 la
Showing the 6 most recent of 60 bulletins. Search all of them free at nhtsa.gov.
What owners report
2019-07-22 · Service Brakes“tl* the contact owns a 2003 mercedes-benz ml500. the contact stated that the abs indicator kept randomly illuminating and the brake pedal traveled to the floorboard when it was depressed. the vehicle was taken to an independent mechanic, but was not diagnosed or repaired. the vehicle remained parked for over a year due to the risk of a potential cr…”
2018-02-14 · Engine“engine keeps getting over-heated even after a new engine fan has been replaced. however, after its replacement i took it to two mercedes dealership to re-inspect and make adjustment to their installment of the fan but it keeps getting overheated. i also had a new water coolant tank installed but it is also leaking out the coolant and showing the wa…”
2017-03-12 · Steering · 169,650 mi“loss of power steering driving on the freeway due to sudden break of idler arm pulley and subsequent shredding of belt. problem is the pulley is made of plastic and cracked in two, leaving 1/2 the pulley and shredding the belt. this occurred at driving speed of 50 mph and mileage around 169,650 on 2003 ml500. this was very dangerous. i was able to …”
2016-07-22 · Steering · 150,000 mi“takata recall. power steering brake issue, power steering hose became detached during vehicle operation, could not steer vehicle. transmission and radio drain, car cut off on me during driving.…”
2015-06-26 · Service Brakes · 81,000 mi“tl* the contact owns a 2003 mercedes benz ml500. while driving approximately 40 mph, the brake pedal was depressed and failed to respond intermittently. the abs warning light illuminated. the vehicle was not diagnosed or repaired. the manufacturer was notified of the failure. the failure mileage was 81,000...updated 08/06/15 *bf the consumer state…”
2014-08-15 · Seats · 98,000 mi“last time i used the heated seats, turned them on the war i always have, but driving down the road my leg felt like it was on fire. one spot in my seat became extremely hot and was smoking. immediately i turned the seats off and have never used them again. called dealer to ask if there was a recall, but no. *tr…”
2014-08-15 · Engine · 111,000 mi“driving 45mph on highway, car shuts off completely. towed to closest gas station, who put a computer on it to find out it was the crank shaft sensor. after completely cooling it will start again, but in less than 10 min it cuts off. *tr…”
2013-03-20 · Electrical System · 133,000 mi · 🔥 fire“tl* the contact owns a 2003 mercedes-benz ml500. the contact stated that while driving approximately 25 mph, smoke emitted from the driver's seat. the vehicle was taken to the dealer but was neither diagnosed nor repaired. the manufacturer was contacted. the failure mileage was 133,000. the vin was unavailable.…”
2012-06-08 · Engine“notes taken on phone by bowman, odi, nhtsa: vehicle shuts off after impact with irregular road surfaces condition such as pothole, transversing a change road grades / surfaces such as speed bumps, etal. vehicle can be immediately restarted after shut-off. one incident allegedly occurred when attempting to merging onto interstate. …”
2011-11-16 · Seats · 97,000 mi · 🔥 fire“tl* the contact owns a 2003 mercedes benz ml 500. while driving approximately 35 mph, the contact smelled a burning odor as his left pant leg caught on fire. the contact sustained a small burn to the leg. the contact stopped the vehicle and noticed sparks and a small flame coming through a small hole on the front passenger's seat. the contact was a…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.