2007 Mercedes Benz S550 Problems & Reliability

When it comes to luxury sedans, the 2007 Mercedes Benz S550 often stands out as a symbol of elegance and performance. However, like any vehicle, it has its share of quirks and issues that potential buyers or current owners might want to be aware of. Whether you’re considering purchasing this model or just curious about its long-term reliability, understanding the common problems and overall dependability of the 2007 S550 can help you make informed decisions. In this blog post, we’ll dive into some of the typical issues reported by owners and explore how this iconic car holds up over time. The 2007 S550, with its powerful V8 engine and plush interior, certainly delivers on the promise of a luxurious driving experience. Yet, it’s not without its challenges. From electrical gremlins to air suspension woes, the S550 has a few areas that might require extra attention. But don’t let that deter you—many owners still swear by its smooth ride and timeless design. We’ll break down the most common problems, discuss their impact on the car’s reliability, and offer some tips on how to keep your S550 running smoothly. So, buckle up and let’s take a closer look at what makes this Mercedes both a dream and, occasionally, a bit of a headache.
Body Components

Parts Assessed:

Windows, power locks, manual locks, doors, trunk, tailgate, mirrors, power and manual seat controls, seat belts, sunroof, convertible top, glass defects.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Brake pads, brake rotors, brake calipers, anti-lock braking system (ABS), brake lines, brake master cylinder, brake booster, parking brake, brake sensors, regenerative braking system (if applicable).

Reported Problems:

  • HVAC Blower Motor May Fail

Analysis:

The 2007 Mercedes Benz S550 has a known issue with the HVAC blower motor potentially failing, which can be a bit of a hassle, especially if you rely on your car’s climate control system. While this problem doesn’t affect every vehicle, it’s something to keep an eye on if you’re considering this model. Overall, the S550 is a solid car, but like any older vehicle, it comes with its quirks.

Parts Assessed

Air conditioning compressor, AC condenser, AC evaporator, heater core, blower motor, automatic climate control system, refrigerant leaks, HVAC electrical components, temperature sensors, ventilation system.

Reported Problems:

  • Camshaft Adjuster Solenoid Failure

Analysis:

The 2007 Mercedes Benz S550 is known to have issues with the camshaft adjuster solenoid, which can lead to engine performance problems and potentially costly repairs. This components failure is a common concern among owners, affecting the overall reliability of the vehicle. While the S550 offers a luxurious driving experience, its important to be aware of this potential issue when considering its long-term dependability.

Parts Assessed

CV joints, driveshaft, axles, differential, limited-slip differential (if applicable), traction control system, electronic stability control (ESC), four-wheel-drive (4WD) components, all-wheel-drive (AWD) components, transfer case, driveline vibration.

Reported Problems:

  • Engine Performance Problems Due to Crankshaft Position Sensor Failure

Analysis:

The 2007 Mercedes Benz S550 is known to have some engine performance issues, particularly due to crankshaft position sensor failure. This problem can lead to symptoms like stalling, difficulty starting, or poor acceleration, which can be pretty frustrating. While the S550 is generally a solid luxury vehicle, this specific issue can impact its overall reliability if not addressed promptly.

Parts Assessed

Infotainment system, GPS navigation, Bluetooth connectivity, touchscreen display, phone pairing, backup camera, rear entertainment system, head-up display, instrument cluster, digital gauges.

Reported Problems:

  • The Transmission Drive Selector Module May Fail

Analysis:

The 2007 Mercedes Benz S550 has a known issue with the Transmission Drive Selector Module, which can lead to problems with shifting gears. This can be a significant inconvenience and might require costly repairs if it fails. While the S550 is generally a well-engineered vehicle, this particular problem can impact its overall reliability for owners.

Parts Assessed

Radiator, radiator hoses, cooling fan, water pump, thermostat, antifreeze leaks, engine coolant reservoir, overheating prevention system, intercooler (if applicable).

Reported Problems:

  • Cracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration

Analysis:

The 2007 Mercedes Benz S550 has a known issue with cracked driveshaft flex discs, which can lead to driveshaft movement and vibration. This problem can affect the overall reliability of the vehicle, as it may cause discomfort while driving and potentially lead to more significant mechanical issues if not addressed. It’s something to keep an eye on if you’re considering this model, as it might require some maintenance to ensure a smooth ride.

Parts Assessed

Alternator, battery, ignition switch, ignition coil, spark plugs, ignition wires, engine control module (ECM), electronic ignition system, auto stop/start function, battery cables, engine wiring harness, fuse box, relays, starter motor.

Reported Problems:

  • Soft Braking Components May Wear After 20,000 Miles

Analysis:

The 2007 Mercedes Benz S550 is generally a reliable vehicle, but one issue to keep an eye on is the soft braking components, which may start to wear after 20,000 miles. This could lead to more frequent maintenance or replacements than you might expect. Overall, while the car offers a luxurious driving experience, it’s important to stay on top of brake maintenance to ensure safety and performance.

Parts Assessed

Engine rebuilds, cylinder head, head gasket, timing chain, timing belt, camshaft, crankshaft, connecting rods, turbocharger or supercharger (if applicable), valve train, piston rings, oil control system, engine knocking, engine misfires.

Reported Problems:

  • Flush Brake Fluid Every Two Years

Analysis:

The 2007 Mercedes Benz S550 is generally a reliable vehicle, but one key maintenance tip is to flush the brake fluid every two years. This routine service helps prevent potential brake issues and ensures the braking system remains in top condition. Staying on top of this maintenance task can contribute to the overall longevity and reliability of your S550.

Parts Assessed

Muffler, catalytic converter, exhaust manifold, heat shields, exhaust pipes, oxygen (O₂) sensors, resonator, exhaust leaks, emissions control system.

Reported Problems:

  • Oil Seepage on Back of the Cylinder Heads

Analysis:

The 2007 Mercedes Benz S550 is known to have some issues with oil seepage on the back of the cylinder heads. This problem can lead to oil leaks, which might cause engine performance issues if not addressed promptly. While it’s a common issue for this model year, regular maintenance and timely repairs can help maintain the car’s overall reliability.

Parts Assessed

Fuel pump, fuel injectors, fuel rail, fuel pressure regulator, throttle body, fuel gauge sensor, evaporative emissions system, EGR (exhaust gas recirculation) valve, charcoal canister, fuel filter, fuel tank, vapor leaks.

Reported Problems:

  • Oil Seepage on Back of the Cylinder Heads

Analysis:

The 2007 Mercedes Benz S550 is known to have some issues with oil seepage on the back of the cylinder heads. This problem can lead to oil leaks, which might cause engine performance issues if not addressed promptly. While it’s a common issue for this model year, regular maintenance and timely repairs can help maintain the car’s overall reliability.

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Onboard Electronics

Parts Assessed

Cruise control, keyless entry system, push-button start, wiper motor, warning lights, power mirrors, interior lighting, exterior lighting, dashboard indicators, electronic parking brake, tire pressure monitoring system (TPMS), alarm and security system, remote engine start, heated and ventilated seats, heated steering wheel, wireless charging pad.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Dashboard rattles, squeaks, wind noise, door seals, weather stripping, water leaks, air leaks, excessive road noise, suspension noise, drivetrain noise, exhaust rattles, engine bay noises.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Paint durability, clear coat protection, rust prevention, corrosion resistance, body panel alignment, door seals, window trim, plastic trim, metal finishes, fading, cracking, peeling.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Struts, shocks, control arms, sway bars, ball joints, tie rods, wheel bearings, power steering pump, power steering fluid leaks, electronic power steering (EPS), steering rack and pinion, steering linkage, alignment issues, torsion bars, springs, air suspension (if applicable).

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Transmission rebuild, transmission replacement, torque converter, transmission solenoids, gear selector, gear shifting, transmission control module (TCM), transmission fluid leaks, clutch (manual transmission), automatic transmission valve body, CVT (continuously variable transmission) components, dual-clutch transmission (DCT) components.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Conclusion

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