On the OM654 and OM656 diesels the maker started a recall over the vacuum controlled coolant pump (maker action code: 2090008).
Applies to the engine OM656D29RSCR, OM656M, OM656EVO.
2020–. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Alexander Migl / CC BY-SA 4.0
What to watch for
The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.
On the OM654 and OM656 diesels the maker started a recall over the vacuum controlled coolant pump (maker action code: 2090008).
Applies to the engine OM656D29RSCR, OM656M, OM656EVO.
The modern OM654 four cylinder diesel (and the modular OM656 six cylinder) carries two weaknesses on the used market that reinforce each other.
Applies to the engine OM656D29RSCR, OM656M, OM656EVO.
The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done. The list covers the whole generation. We did not filter it by model year. Some apply only to a narrower production window.
Most recent: 18 March 2023
A12/00856/23Safety recallInjuries18 March 2023 · EU Safety GateThe instrument panel may detach, thereby affecting the deployment performance of the passenger airbag in the event of an accident, increasing the risk of injury. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 18/03/2023
A12/01658/21Safety recallInjuries2 November 2021 · EU Safety GateIn certain vehicles with a calliper disc-brake system, the bolts of the brake callipers on the front axle may not meet the specifications. A brake calliper can detach during braking, which may lead to braking power being reduced and components being lost. That would increase the potential risk of accidents, including for the following traffic. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Distributor Category of measure(s): Recall of the product from end users Date of entry into force: 02/11/2021
A12/00284/22Safety recallInjuries29 October 2021 · EU Safety GateWhen the vehicle stops the airbag control unit may deactivate the passenger airbag. This could increase the risk of injury in the event of an accident. The product does not comply with the requirements of the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Importer Category of measure(s): Recall of the product from end users Date of entry into force: 29/10/2021
A12/00017/22Safety recallFireno date · EU Safety GateA trapped particle may damage the sealing between the fuel rail and fuel injector, which could cause fuel to leak into the engine compartment. Consequently, leaking fuel may come into contact with hot parts of the engine, increasing the risk of fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00045/22Safety recallFireno date · EU Safety GateThe vacuum-controlled coolant pump may not be tightly sealed between the coolant and vacuum circuits. This may result in the coolant leaking into the vacuum circuit leading to an electrochemical reaction, increasing the risk of fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of Motor Vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00055/22Safety recallElectric shock, Fireno date · EU Safety GateDue to an incorrect material composition of the Mode 2 charging cable for charging at a household power socket, the insulation resistance of the rubber buffer could be impaired, overriding the protective function of the charging cable. Furthermore, in combination with an error in the household infrastructure, the activation of the protective device in the household electrical circuit might be prevented. This could cause the user to have an electrical shock and could lead to a fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00152/21Safety recallInjuriesno date · EU Safety GateThe internal tie rods used for the front axle steering may not have been intended for the type of vehicle, and thus, could be too short. In such a case, the rods could be bent or pulled out in the event of an additional, sudden force. This would impair the steerability of the vehicle, increasing the risk of an accident.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00485/24Safety recallInjuriesno date · EU Safety GateThe catch fixing the wheel hubcaps may not withstand the pressures encountered during driving. In such cases, the hubcaps could detach from the vehicle, increasing the risk of accident and injury to other road users. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00497/22Safety recallInjuriesno date · EU Safety GateThe airbag control unit might not have been bolted according to specifications and might detect incorrect acceleration values when the vehicle is moving. In consequence, the restraint systems might not be activated completely, which can increase the risk of an injury in case of an accident. The product does not comply with the Regulation on the approval and market surveillance of Motor Vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00610/22Safety recallInjuriesno date · EU Safety GateImproper welding on the rear axle can cause the thrust rod to come loose from the rear axle bracket. This may cause the vehicle to swerve in response to the road surface or the vehicle may skid sideways during emergency braking. This leads to loss of control over the vehicle, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of Motor Vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00730/21Safety recallInjuriesno date · EU Safety GateThe polycarbonate roof panel located between the windscreen and the panoramic roof may not have been bonded correctly to the vehicle during a prior repair. In such cases, the adhesive bonding could gradually deteriorate and the panel could become detached from the vehicle, posing a risk to other road users. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00936/21Safety recallInjuriesno date · EU Safety GateThe latching of the fuel delivery module to the fuel tank may be defective and could be released while the vehicle is being driven. As a result, fuel may leak from the fuel tank, posing a risk to the following traffic.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/00939/24Safety recallFire, Injuriesno date · EU Safety GateA fuse may be faulty, which can lead to engine failure or impairment of the restraint functions and instrument cluster. This increases the risk of an accident, injuries and fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01260/21Safety recallFireno date · EU Safety GateThe screw connection of an electrical connector at the pre-fuse box in the passenger footwell may be defective, which could increase the electrical transition resistance at that connection. As a result, the high electrical currents flowing through the connection could increase the temperature in this area, increasing the risk of fire.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01321/21Safety recallFireno date · EU Safety GateDue to defective fixing, the electrical connection between the 48V or 12V wiring harness and the support point may be sporadically interrupted. This could result in electrical arcing, leading to increased risk of fire. Furthermore, if the electrical connection were completely interrupted, the vehicle could not be started.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01336/20Safety recallFire, Injuriesno date · EU Safety GateDue to the lack of documentation, there is no confirmation that the screw connections of the turbocharger’s oil-supply and oil-return pipes were correctly executed during the assembly process. In the event of a loose screw connection, oil might leak at the oil-supply and/or oil-return pipe of the turbocharger. The leaking oil might then come into contact with hot components, increasing the risk of fire.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01347/21Safety recallInjuriesno date · EU Safety GateThe fuel tank may not be leak-proof. As a result, fuel could escape and leak onto the road, posing a risk to the following traffic.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01357/21Safety recallInjuriesno date · EU Safety GateThe middle fold-down rear headrest may not be correctly locked into the in-use position. This could impair its protective effect, increasing the risk of injury in the event of an accident.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01361/21Safety recallInjuriesno date · EU Safety GateThe electrical connector of the side-impact sensors might not be correctly latched and could become detached. This would lead to delayed activation of the restraint systems in the event of a side impact, reducing their restraining effect and increasing the risk of injury to the vehicle occupants.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01379/22Safety recallInjuriesno date · EU Safety GateTrim parts of the backrest on both front seats can detach during rear airbag deployment in the event of an accident. The airbag deployment may be impaired and the airbag itself may be damaged, increasing the risk of injury to rear occupants. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/01603/21Safety recallInjuriesno date · EU Safety GateThe mounting screws of the disc brake callipers on the front axle may not be in line with specifications. As a result, when braking, a disc brake calliper may detach, increasing the risk of accidents. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/02133/23Safety recallFire, Injuriesno date · EU Safety GateThe fuse box of the engine compartment may be defective. High electrical currents could increase the temperature, creating a risk of fire. This is turn can lead to an electricity interruption and the vehicle may lose propulsion power, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/02416/23Safety recallFire, Injuriesno date · EU Safety GateThe 12 volt ground wire screw in the trunk may be defective, which can lead to that certain electronic stability program (ESP) functions can be disabled or strong electrical currents may lead to a local increase in temperature, increasing the risk of an accident or fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
A12/03598/24Safety recallEnvironment, Fire, Injuriesno date · EU Safety GateIn the event of an independent hardware failure, the lambda control in the Engine Control Unit (ECU) software can erroneously increase the amount of injected fuel during cylinder deactivation. As a result, exhaust temperatures can increase and this can damage surrounding components (e.g. engine wiring harness, catalytic converter). This can create an unexpected loss of propulsion, increasing the risk of accidents and injuries. Moreover, this can increase the risk of fire. In addition, local statutory exhaust emission limits could be exceeded. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
SR/02431/25Safety recallFire, Injuriesno date · EU Safety GateAn improperly reworked fuse box may lead to breaks in contact or incorrect fuse ratings. Therefore, systems connected to the fuse could fail, including the vehicle losing drive without warning as well as the restraint systems or the instrument cluster being compromised. This could lead to injury or fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
Engines and transmissions in this generation
A fault is often tied to the engine, not to the whole generation. You find the engine code in the registration document.
W223 · 2020–
The fault list opens on the version page.
42 versions
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 350 d
2020–2026 · S 350 d
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 350 d 4MATIC
2020–2026 · S 350 d 4MATIC
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 350 d 4MATIC long
2020–2026 · S 350 d 4MATIC long
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 350 d long
2020–2026 · S 350 d long
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 400 d 4MATIC
2020–2026 · S 400 d 4MATIC
2.9 l · 2925 cm³
OM656D29RSCR · MB7250
S 400 d 4MATIC long
2020–2026 · S 400 d 4MATIC long
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 350 d
2020–2026 · S 350 d
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 350 d 4MATIC
2026– · S 350 d 4MATIC
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 350 d 4MATIC long
2020–2026 · S 350 d 4MATIC long
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 350 d long
2020–2026 · S 350 d long
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 450 d 4MATIC
2020–2026 · S 450 d 4MATIC
3.0 l · 2989 cm³
OM656EVO · OM656M · MB7250
S 450 d 4MATIC long
2020–2026 · S 450 d 4MATIC long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 450 e
2020–2026 · S 450 e
3.0 l · 2999 cm³
M256E30DEHLAG · M256E30DEHLAGR · MB7250
S 450 e long
2020–2026 · S 450 e long
3.0 l · 2999 cm³
M256E30DEHLAG · M256E30DEHLAGR · MB7250
S 450 e
2026– · S 450 e
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 450 e long
2026– · S 450 e long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
Maybach S 580 e 4MATIC
2021–2026 · Maybach S 580 e 4MATIC
3.0 l · 2999 cm³
no engine code
S 450
2020–2026 · S 450
3.0 l · 2999 cm³
no engine code
S 450 4MATIC
2020–2026 · S 450 4MATIC
3.0 l · 2999 cm³
no engine code
S 450 4MATIC long
2020–2026 · S 450 4MATIC long
3.0 l · 2999 cm³
no engine code
S 450 long
2020–2026 · S 450 long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 580 e
2020–2026 · S 580 e
3.0 l · 2999 cm³
M256E30DEHLA · M256EVO · MB7250
S 580 e 4MATIC
2020–2026 · S 580 e 4MATIC
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 580 e 4MATIC long
2020–2026 · S 580 e 4MATIC long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 580 e long
2020–2026 · S 580 e long
3.0 l · 2999 cm³
no engine code
S 450 4MATIC
2020–2026 · S 450 4MATIC
3.0 l · 2999 cm³
no engine code
S 450 4MATIC long
2020–2026 · S 450 4MATIC long
3.0 l · 2999 cm³
no engine code
S 500 4MATIC
2020–2026 · S 500 4MATIC
3.0 l · 2999 cm³
no engine code
S 500 4MATIC long
2020–2026 · S 500 4MATIC long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
Maybach S 580 e 4MATIC
2026– · Maybach S 580 e 4MATIC
3.0 l · 2999 cm³
no engine code
S 500 4MATIC
2020–2026 · S 500 4MATIC
3.0 l · 2999 cm³
no engine code
S 500 4MATIC long
2020–2026 · S 500 4MATIC long
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 580 e 4MATIC
2026– · S 580 e 4MATIC
3.0 l · 2999 cm³
M256E30DEHLA · M256E30DEHLAG · MB7250
S 580 e 4MATIC long
2026– · S 580 e 4MATIC long
4.0 l · 3982 cm³
M176DE40AL · MB7250
Maybach S 580 4MATIC
2021–2026 · Maybach S 580 4MATIC
4.0 l · 3982 cm³
M176DE40AL · MB7250
S 580 4MATIC
2020–2026 · S 580 4MATIC
4.0 l · 3982 cm³
M176DE40AL · MB7250
S 580 4MATIC long
2020–2026 · S 580 4MATIC long
4.0 l · 3982 cm³
no engine code
Maybach S 580 4MATIC
2026– · Maybach S 580 4MATIC
4.0 l · 3982 cm³
no engine code
S 580 4MATIC
2026– · S 580 4MATIC
4.0 l · 3982 cm³
no engine code
S 580 4MATIC long
2026– · S 580 4MATIC long
4.0 l · 3982 cm³
M177DE40AL
S 63 AMG E Performance long
2020–2026 · S 63 AMG E Performance long
6.0 l · 5980 cm³
M279E60AL
Maybach S 680 4MATIC
2021–2026 · Maybach S 680 4MATIC
Neighbouring generations
W223 (2020-). If the listing is from the changeover year, look at the neighbour too.
Common questions
2020–. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.
No. It depends on the engine and the transmission too.
The fault list is.
We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.