4 recalls across 3 model years
The Mercedes-Benz S550 4Matic has 4 recalls covering 2015 through 2017 model years, with the most serious being a seatbelt defect on 2017 models where front seatbelt pretensioners may not fire correctly in a crash, leaving occupants without adequate restraint.
The 2015 model year has a separate seatbelt concern: the left and right front seatbelts may have been swapped during assembly, placing each belt at the wrong installation angle. An incorrectly angled belt can fail to lock properly in a crash and may not hold the occupant in place. On 2017 models, a door latch fault can cause a door that appears locked to open unexpectedly while driving. Spanning the 2015 and 2016 model years, a software fault in the emergency call system can cause the system to report an incorrect date, time, and vehicle location to emergency responders, potentially delaying help after a crash.
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