Used Mercedes-Benz EQS Lambda Sensor

No — the Mercedes-Benz EQS is a fully battery-electric vehicle with no internal combustion engine, no exhaust system, and no oxygen (lambda) sensors fitted to any variant. Lambda sensors only exist to monitor exhaust gases in petrol or diesel engines, so the part simply does not apply to this model. If you are searching for a sensor related to your EQS, you may be thinking of a different component such as a temperature sensor, a high-voltage battery management sensor, or a position sensor — contact a breaker with your registration and describe the symptom and they can advise on the correct part.

Almost certainly yes — no variant of the EQS was ever produced with a combustion engine, so no lambda or oxygen sensor would ever have been fitted at the factory. It is possible there has been a mis-identification of the part needed, perhaps caused by a generic fault-code description or a parts catalogue error. Describe the warning light or symptom to a breaker or independent Mercedes specialist alongside your full registration, and they should be able to identify the correct sensor for your vehicle.

No — because the EQS was never built with an exhaust system, no lambda sensor was ever manufactured for or fitted to it, so there is no EQS lambda sensor in existence to transfer to another vehicle. If you need a lambda sensor for a petrol or diesel Mercedes, you should search by the correct model, engine code, and registration of that vehicle rather than cross-referencing the EQS. A breaker will need your engine code and year to source the right sensor for a combustion-engined Mercedes.

On the EQS, people sometimes encounter fault codes or warnings relating to sensors that sound unfamiliar, and lambda is occasionally suggested in error by generic code readers designed primarily for combustion vehicles. The sensors that do exist on the EQS include those related to the battery thermal management system, inverter temperature monitoring, and various chassis and powertrain position sensors. If your code reader has flagged something unexpected, have the vehicle inspected by a Mercedes-trained technician or EV specialist who can read the manufacturer-specific codes accurately.