Mercedes-Benz Cls 450 Recalls

The Mercedes-Benz CLS 450 has 21 recalls spanning the 2019–2023 model years, with the most serious being a loose 48-volt ground cable in the engine compartment on 2021–2023 vehicles that can overheat and start a fire.

On 2022–2023 models, the fuel pump can shut down without warning, cutting drive power while the vehicle is in motion. Also on 2021–2023 vehicles, loose side crash sensor connectors can delay airbag and seatbelt deployment in a side impact, and rear seatbelt retractors on 2021–2022 models can deactivate early, preventing a child safety seat from being secured properly. A seat mounting issue on 2021 models can also prevent airbags and seatbelts from performing correctly in a crash. The 2023 model year has a software error that disables the exit warning system's audio and visual alerts for approaching vehicles when a door is opened.

The 2019–2022 model years share a battery-related issue where safety features including the emergency call system, hazard lights, electric seats, and automatic door locks can become inoperable after a crash. The emergency call system itself has separate software issues on 2019–2021 models that can either prevent contact with emergency services entirely or send responders to the wrong location. On 2019–2020 models, a software fault in the multimedia system can cause the rearview camera to display a black screen while reversing. The 2021 model year has the same rearview camera blackout issue tied to a system reboot on startup.

The 2019 model year carries several distinct issues. The steering rack on rear-wheel-drive 2019 models can develop a fault that prevents proper steering. A software defect can cause the engine to stall unexpectedly. The automatic emergency braking radar can fail to apply partial or full braking when needed. The seatbelt pretensioners and the pre-crash safety tensioning system may not deploy in a crash. The passenger seat occupant classification sensor can fail to deactivate the front airbag when a child seat is present, raising the risk of airbag deployment against a rear-facing seat. A wiring harness near the engine fan on 2019 six-cylinder models can chafe and disable the coolant pump, leading to overheating and an engine stall. The headlight horizontal adjustment on 2019 models can lose its seal, allowing aim to shift and reducing forward visibility. On 2019 models that have had the instrument cluster replaced, the seatbelt reminder chime and warning light may not function. The 2022 model year also has a heated steering wheel sensor fault that disables hands-off detection, preventing the driver assistance system from issuing steering wheel grab warnings or triggering the automatic emergency stop feature.