2018 Mercedes-Benz S63: common problems
The maker issued 33 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 33
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 13 |
| Equipment | 0 | 0 | 8 |
| Engine and cooling | 0 | 0 | 3 |
| Powertrain | 0 | 0 | 3 |
| Engine | 0 | 0 | 2 |
| Exterior lighting | 0 | 0 | 2 |
| Fuel system | 0 | 0 | 2 |
| Seats | 0 | 0 | 2 |
| Communication | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Tires | 0 | 0 | 1 |
| Other | 0 | 0 | 2 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Tailgate opens unintentionally
Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the…
- Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz, has determined that in certain MY…
Mercedes-Benz AG (âÂÂMBAGâÂÂ), the manufacturer of Mercedes-Benz, has determined that in certain MY 2017-2021 C-Class, CLA, CLS, E-Class, GLC, GLE, GLS, AMG GT, S-Class, SL, and SLC (205, 117, 257, 213/238, 253…
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the…
Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats for extended periods of time (pressure marks). ⢠Objects wedged between the seat backrest and seat…
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle
The fault code B129C00 is stored in the control unit log. The message occurs in particular after the vehicle has been non-operational for an extended period of time; the message then disappears of its own accord after…
- The Mercedes me connect services cannot be activated
The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES control unit log, under the "URL" tab, the value DEFAULT is stored for "atpServerUrl" and/or…
- Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain…
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and…
- Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain…
Mercedes-Benz AG (âMBAGâ), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (âMYâ) 2014-2020 S-Class (217 and 222 platform) vehicles, the incorrect pilot bushings may have…
- Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause…
Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or performance and is not a safety concern. The…
- Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain…
Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (âMYâ) 2028-2021 S-Class, S-Class Coupe/Cabriolet (217 and 222 platforms) vehicles, the low pressure…
- Complaint Creaking noise from side bolster when load applied to seat cushion of front seats
Cause Soiling to the replacement fabric of the seat cushion cover means that friction on the seat side finisher mountings generates a creaking noise. Remedy 1. Clean fabric cover and seat side finisher in marked area…
- Complaint The result from the XENTRY battery test does not match the current state of the battery
Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event…
- Complaint The range of the integrated garage door opener (GTO) is too short
Cause 1. Vehicles equipped with infrared windows and/or a heated windshield may suffer from complaints involving low transmission power. 2. When comparing the range between the integrated GTO and the garage door hand…
NHTSA lists 33 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Mercedes-Benz S63?
There are no owner complaints in the NHTSA data for this year; the data comes from 33 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2018 Mercedes-Benz S63?
NHTSA lists 33 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 Mercedes-Benz S63 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.