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Engine coolingPart report

1999 Mercedes-Benz ML430 Engine cooling Problems

Complaints
18about this part
Share
41%of 44 total for the year
Median mileage
75,000miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 18 complaints about the engine cooling of the 1999 Mercedes-Benz ML430, 41% of the 44 complaints for this model year. Where a mileage was given, the median is 75,000 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“December 11, 2013 I was driving home from work my benz quit on me in the road would not start back (my home is within 2 miles of my work) the day before it had quit as I was making a turn but restarted a couple of days prior I had the car warming and it shut off while warming up but restarted. There was no lights on the instrument dash panel lit or staying lit. After some internet investigating I assume it was the crankshaft position sensor as it had all the signs that others have had I purchased one for the repair shop to install. …”

NHTSA complaint #10557938, filed 2013-12, 65,000 miles

“Crankshaft harmonic balancer failure! (1999 mercedes benz ML430)... Mileage: 82000 ref: NHTSA action # 03058..he pulley failure just occurred while driving down i85 in atl. Upon hearing a knocking noise and smelling what seemed like rubber burning, I immediately stopped the engine. It took no time to find the source of the smell, it was the v-belt (no longer centered on all pulleys) rubbing against the engine. Being reasonably mechanic savvy, I knew this was a little more serious than just a water pump outage and proceeded called a tow truck. …”

NHTSA complaint #10093140, filed 2004-09, 82,663 miles

“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. …”

NHTSA complaint #10043368, filed 2003-10, 72,000 miles

“The owns a 1999 Mercedes-Benz ml 430. The contact stated while driving 25 MPH the catalytic converter starting making a noise and leaking. The contact took the vehicle to a local mechanic and the mechanic notice the welding was cracking. The mechanic pulled up a recall and suggested the contact take the vehicle to the dealer. The contact took the vehicle to the dealer for the recall remedy repair and the dealer stated due to the VIN number, the vehicle is not included in the recall. The dealer suggested to the contact that he call manufacturer. …”

NHTSA complaint #10357002, filed 2010-09, 98,000 miles

“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”

NHTSA complaint #10054362, filed 2004-01, 78,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200112%
200024%
19991841%

Other parts of the 1999 Mercedes-Benz ML430

Transmission and drivetrain
8 complaints
Steering
6 complaints
Electrical system
5 complaints
Fuel system
5 complaints
Brakes
4 complaints
Other or unknown
2 complaints
Suspension
2 complaints
Engine
1 complaints
Equipment
1 complaints
Latches, locks and linkages
1 complaints
Vehicle speed control
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 1999 Mercedes-Benz ML430

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology