2017 Mercedes-Benz S550 Electrical system Problems
- Complaints
- 1about this part
- Share
- 6%of 16 total for the year
- Median mileage
- 600miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 2017 Mercedes-Benz S550, 6% of the 16 complaints for this model year. Where a mileage was given, the median is 600 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Starting out from an intersection the entire electrical system died, no engine, no lights, no ability to open trunk, nothing. I am reporting this because I fear such an event could be life-threatening, eg. If it happened while traveling at a high speed. I believe the airbags may have been disabled along with all other electrical. Dealer reports there was a similar event with another of the same car one week earlier, and that it is apparently caused by a contact for the battery ground burning out. I believe there should be an urgent recall.”
NHTSA complaint #11075262, filed 2018-02, 600 milesRelated service bulletins
- 11036511Aug 24, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket…
- 11036190Aug 6, 2026Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search…
- 11033185May 26, 2026Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the…
- 11033016May 26, 2026Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market…
- 11031202Apr 7, 2026Complaint When closing the door, the side window may remain slightly open (short stroke position). Automatic window raising function of side window inoperative. NOTE: Window is…
- 11028834Feb 13, 2026Complaint Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure sensor 'A' has a short circuit to positive stored in VGS control…
- 11026835Dec 18, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
- 11023347Sep 25, 2025Complaint 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…
- 11023103Sep 11, 2025Complaint After a software update of component LIB48_222 - G1/3 (48 V on-board electrical system battery) from software release A 000 902 50 48 to software release A 000 902 15…
- 11018626May 22, 2025Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the…
Electrical system: other model years
Other parts of the 2017 Mercedes-Benz S550
4 complaintsOther or unknown
3 complaintsSteering
3 complaintsAir bags
2 complaintsBody and structure
2 complaintsEngine
1 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2017 Mercedes-Benz S550
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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