2014 Mercedes-benz S550 problems

General information about Mercedes-benz-S550
Overview of popular issues
Recalls list

The Mercedes-Benz S-Class, formerly known as Sonderklasse (German for "special class", abbreviated as "S-Klasse"), is a series of full-sized luxury sedans, limousines and armored sedans produced by the German automaker Mercedes-Benz. The S-Class is the designation for top-of-the-line Mercedes-Benz models and was officially introduced in 1972 with the W116, and has remained in use ever since. The S-Class is one of the flagship vehicles for Mercedes-Benz.

The S-Class has debuted many of the company's latest innovations, including drivetrain technologies, interior features, and safety systems (such as the first seatbelt pretensioners). The S-Class has ranked as the world's best-selling luxury sedan. In automotive terms, Sonderklasse refers to "a specially outfitted car." Although used colloquially for decades, following its official application in 1972, six generations of officially named S-Klasse sedans have been produced.

In 1981, the two-door, four-seat S-Class, designated as SEC, was introduced, sharing the petrol V8 engines with its four-door version, W126. After the introduction of a new nomenclature scheme, SEC was simply renamed as S-Class Coupé. For the 1996 model year, the coupé was separated from the S-Class line and named as new CL-Class (in line with other two-door models: CLK, SL, and SLK); however, the CL-Class was reintegrated into the S-Class model line (same with CLK becoming E-Class Coupé and Cabriolet). The first-ever S-Class convertible since 1972, internally named A217, was introduced and became a one-generation model only. After the end of W222 production in 2020, the successors to the C217 coupé and A217 convertible are not planned, citing the low demand for those models and stronger demand for SUV models.

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Common 2014 Mercedes-benz S550 problems

Based on the information gathered from various sources regarding the Mercedes-Benz S550 2014 model, here is a list of common problems reported by owners:

Rear Seatbelt Malfunction:
- The rear seatbelt extender may not retract correctly, posing a risk during collisions if the pretensioners deploy. This issue can lead to loose parts causing injury to occupants.
Oil Leak from Turbocharger:
- The oil feed pipe connected to the turbocharger can develop leaks, potentially causing oil to leak onto hot engine components, which could lead to a fire in extreme cases. Affected cars should have the oil feed line replaced as part of a recall.
Start/Stop System Shutdown:
- Due to faulty software, the idle speed can become erratic, causing the engine to stop unexpectedly. This malfunction affects the start/stop system, leading to operational issues. Dealers can resolve this by updating the software.
Automatic Gearbox Malfunction:
- Diesel models may experience issues with the gearbox wiring harness being damaged by the hot exhaust, causing the car to go into neutral while driving. Inspection and potential replacement or rerouting of the harness are necessary to address this problem.
Front Seatbelt Fault:
- The front seatbelt pretensioner may not meet specifications, leading to potential failure during a collision. Affected vehicles should have the front seatbelt system replaced as a precautionary measure.
Malfunctioning Occupant Safety System:
- In some instances, the mains power supply can be dislodged during airbag deployment, affecting various safety systems like the automatic door lock release. A recall was issued to address this issue.
Faulty Control Unit:
- A small number of S-Class models experienced issues with the safety and emissions control systems. Affected vehicles were recalled to have their software updated to resolve the problem.

These common problems reported by owners of the Mercedes-Benz S550 2014 highlight various safety and operational concerns that have been identified with this particular model. Owners experiencing these issues are advised to contact authorized dealers for proper diagnosis and resolution to ensure the safety and reliability of their vehicles.

Is 2014 S550 engine reliable?

The 2014 Mercedes-Benz S550 Reliability Rating is 3.0 out of 5. It ranks 27th out of 32 for all car brands.

Is S550 expensive to maintain?

The average total annual cost for repairs and maintenance on a Mercedes-Benz S550 is $1,249, compared to an average of $976 for luxury fullsize cars and $652 for all vehicle models. The average total annual cost for unscheduled repairs and maintenance across all model years of a vehicle.

Are s550s reliable?

The S550 is a reliable vehicle. Airbags on any Benz vehicle typically last about 10 years /100k miles; very few reports of them leaking on the W222 because it's still relatively new. Coolant lines can leak, suspension bushings wear, but other than that there are no common issues.

Is buying a used S-Class worth it?

Model range, pricing and features

So, yes why not, buy one. But, if you're in the market for a used S-Class because you genuinely can't afford a new one, these cars will cost you an absolute fortune.

2014 Mercedes-benz S550 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2014 Mercedes-benz S550.

You can leave your car complaint via the special form below.

2014 Mercedes-benz S550 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 5 recalls for different components of the 2014 Mercedes-benz S550.

2023-12-15

Manufacturer: Mercedes-Benz USA, LLC
Components: STRUCTURE:BODY:ROOF AND PILLARS
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014-2020 C-Class, CLA, GLA, S-Class, GLC, and GLE vehicles. Please refer to MBUSA's recall report for specific vehicle details. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle.
Consequence: A detached roof panel can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will replace the front panel, free of charge. Owner notification letters were mailed on August 2, 2024. Owner notification letters will be mailed in phases, on, March 22,2024, and August 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 21V-197.

2021-03-19

Manufacturer: Mercedes-Benz USA, LLC
Components: STRUCTURE:BODY:ROOF AND PILLARS
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45 AMG, 2018 GLC63 AMG, 2014-2017 S550, 2018-2020 S450, 2016-2019 GLE63 Coupe AMG, 2016 GLE450 Coupe, 2014-2020 S63 AMG, 2018-2019 S560, and 2019 GLC350e vehicles equipped with a panoramic sunroof. The front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair.
Consequence: The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.
Remedy: Mercedes-Benz dealer will remove the bonded panel and will install a new front panel by following the detailed repair instructions and using the approved primer, cleaner and adhesive, free of charge. Owner notification letters were mailed on September 3, 2021 and October 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

2019-11-01

Manufacturer: Mercedes-Benz USA, LLC.
Components: COMMUNICATION
Summary: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdf
Consequence: An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.

2016-12-14

Manufacturer: Mercedes-Benz USA, LLC.
Components: STEERING:ELECTRIC POWER ASSIST SYSTEM
Summary: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 SL550, 2013-2014 SL63 AMG, 2014-2016 E350, 2014 E350 Cabriolet, E350 Coupe, 2014-2015 S550, 2015 E350 Bluetec, 2015-2016 E400, 2016 E550 Coupe, and Maybach S600 vehicles manufactured August 23, 2012, to August 14, 2015. The affected vehicles use an electric power steering system that may have improperly soldered contacts inside the control unit, potentially resulting in the power steering system deactivating while driving.
Consequence: If the control unit pins lose connection, there would be a loss of electric power steering assist, increasing the risk of a crash. The increase in pin contact resistance can also increase the risk of a fire, even while the vehicle is parked and ignition is off.
Remedy: MBUSA will notify owners, and dealers will replace the electric power steering control unit, free of charge. The recall began October 13, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

2013-11-20

Manufacturer: Mercedes-Benz USA, LLC.
Components: SEAT BELTS:FRONT:ANCHORAGE
Summary: Mercedes-Benz USA, LLC (Mercedes-Benz) is recalling certain model year 2014 S550 vehicles manufactured April 11, 2013, through October 14, 2013. In the affected vehicles, the front seat belt anchor might not be installed correctly allowing it to come loose in a crash.
Consequence: If the seat belt anchor comes loose, in the event of a crash, the occupant may not be properly secured, increasing the risk of injury.
Remedy: Mercedes-Benz will notify owners, and dealers will inspect and correct the front seat belt anchor fitting, as necessary, free of charge. The recall began on December 20, 2013. Owners may contact Mercedes-Benz at 1-800-367-6372. Mercedes-Benz's recall number is 2013110008.

Additional sources

More sources of information about 2014 Mercedes-benz S550 problems:

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