Even the most expensive cars aren't immune to mechanical problems. This week, Mercedes announced a recall affecting 27,000 of its high-end sedans due to a potential issue with their V8 engines.
The recall included 26,260 Mercedes-branded S580 sedans built between 2021 and 2023 and 930 Mercedes-Maybach S580 models from the same period. Both vehicles feature a 496 horsepower 4.0-liter V8 engine.
To improve efficiency, these V8 engines incorporate 48-volt mild-hybrid technology and Mercedes' Camtronic cylinder deactivation system. The latter can shut down four cylinders during cruising to save fuel. However, Mercedes discovered a potential issue with the Camtronic equipment that could lead to engine problems.
If a hardware failure occurs in the Camtronic system, the lambda control system might inject excessive fuel into the cylinders. This can cause elevated exhaust temperatures, potentially damaging components like the catalytic converter. In severe cases, the engine may stall, posing a safety risk.
Mercedes claims that drivers won't receive any prior warnings, but they might notice a check engine light illuminating when the fault occurs. The automaker began investigating the issue after receiving a disproportionate number of reports from owners experiencing engine starting or running problems.
To address the problem, Mercedes will update the software in the engine control unit. Unfortunately, this update cannot be performed over-the-air and requires a visit to a dealership. This inconvenience may be particularly frustrating for owners of the more expensive Mercedes-Maybach S580 models.
It's worth noting that even the more luxurious S680 model with its V12 engine has faced recalls. Last year, both the Maybach S580 and S680 were recalled due to a problem with a 12-volt ground connection.
This recall serves as a reminder that even high-end luxury vehicles can experience mechanical issues. While spending more money on a car may provide certain benefits, it doesn't guarantee a completely trouble-free ownership experience.