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Mercedes-Benz · Exhaust & Emissions

AdBlue level and quality sensor

The sensor reporting how much AdBlue is left and whether it is the right concentration.

How you know it is this

  • A level warning with a full tank
  • A quality fault after a top-up
  • A countdown starting with AdBlue clearly present

Worth knowing before you buy

  • A quality fault after a top-up usually means what went in was not AdBlue, or was old. It degrades in heat, which matters here.
  • Part of the in-tank module on most cars rather than separately available.
  • A false level reading starts the no-start countdown just as a real one does.

What we need to quote it. The chassis number and the fault codes. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

AdBlue tank and heaterLevel and quality sensorPump and moduleDosing valveNOx sensors
AdBlue dosing — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the adblue / scr

All exhaust & emissions parts
Get in touch

AdBlue level and quality sensor for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)