G550

62 service bulletins filed with NHTSA for this model year

• May 26, 2026ELECTRICAL SYSTEMLI82.85-P-080507

  Complaint 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 instrument cluster. In addition, the following two conditions are also met: • HERMES (N112/9) control unit: event code B15CE00 is ACTIVE and STORED (A+S) • Vehicle Documentation System: For the HERMES control unit, the EID1, EID2, ICCID, IMEI, IMSI, TELNR fields in the "Identification/Serial number" column have the value "-" Caus

• May 7, 2026STRUCTURE:BODYLI88.80-P-080031

  Complaint Water ingress in the load compartment between the C and D pillars. Cause In the area of the rounding at the D-pillar, a leakage may occur between the rear side wall and the roof paneling. Remedy Troubleshooting: Locate the area of the leak by performing a pressure test and using leak detector spray or soapy water. To do this, tape up the rear vents on the D-pillars and set the ventilation system to the maximum blower setting. If leaks are verified, proceed with sealing of the drip rail

• Apr 24, 2026UNKNOWN OR OTHERLI00.01-P-078887

  Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference. Cause Information only Remedy Acronyms: • AV = Actual Values • CPR = Car Package Release (For MB.OS) • CU = Control Unit • CUL = Control Unit Log • DTC = Diagnostic Trouble Code • E-Stan

• Apr 21, 2026ENGINELI20.10-P-072886

  Complaint CEL ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and stored in the ME (N3/10). There are no drivability concerns related to the complaint. Cause Root cause varies Remedy Prior to performing any repairs for this complaint: With a cold engine, pressurize the high temp coolant circuit and while it's under pressure, release the cap on the low temp coolant circuit and check if the pressure drops right away or not. If the pressure drops, the lower h

• Mar 27, 2026STRUCTURE:BODYLI88.85-P-059178

  Complaint Wind noises/whistling noises from front area of roof or from area of instrument panel/windshield at high speeds Cause The airstream can excite the rubber strip of the windshield to whistle. Note: To troubleshoot, tape down the strip. Remedy Seal the lower lip of the rubber strip at the top of the windshield in the installed state across the entire width with window adhesive.

• Mar 9, 2026ELECTRICAL SYSTEMLI54.65-P-080132

  Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

• Jan 15, 2026VISIBILITY/WIPERLI83.30-P-079850

  Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Verify Customer Concern • Confirm the issue reported by the customer. Compare to Like Vehicle • Determine if the behavior is normal by comparing with a similar vehicle. Determine Your Game and Players • Identify the diagnostic strategy and involved components/systems. Testing • Perform relevant diagnostic tests. Refrigeran

• Jan 15, 2026ENGINELI05.20-P-080192

  Complaint Customer states check engine light on in the dash. Vehicle has one or more DTC's Present P164B00, P164B09, P2B4400, P005A07, P005C07, P005A09, P005C09, P003C07, P2B5007, P003C09, P2B5009, P34C200, P34C109, P34C800, P34BE00, P34BD09 Cause Software and Hardware Remedy 1. Check for available Software updates for the Engine Control Unit ME N3/10. Perform update if available. 2. Check part numbers on ALL CAMTRONIC actuators to ensure latest part numbers are installed. 3. A177 982 03 03 and

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Source: NHTSA manufacturer communications (technical service bulletins).