Mercedes-Benz Actros
The Actros (OM471 / OM473) is one of the most refined long-haul tractors on the road — and one of the most demanding when its emissions or fuel system goes out of spec. We work on Actros daily.
What you'll notice
Tell-tale signs the Mercedes-Benz Actros is asking for attention.
- Engine derate / limp mode with AdBlue warning lit
- White smoke and uneven idle after cold start
- Loss of pulling power under load on inclines
- Increased fuel consumption with no obvious cause
How we find the fault
- 1
Full Xentry / DAS scan
Read all control units, capture freeze-frame and historic fault codes from MCM, ACM and CPC modules.
- 2
SCR & AdBlue live data
Verify NOx sensor readings upstream/downstream, dosing pressure, and urea quality output.
- 3
Boost & EGR flow test
Compare actual vs commanded boost; inspect EGR valve actuation and cooler back-pressure.
- 4
Road test under load
Confirm fault no longer reproduces and parameters stay within OEM tolerances.
What we fix on the Mercedes-Benz Actros
AdBlue pump & dosing module
Replace failed dosing valve, refresh urea lines, prime and re-learn the system.
Turbo VNT actuator overhaul
Replace electronic actuator, calibrate stroke via Xentry.
EGR cooler & valve service
Strip, clean or replace EGR cooler; new gaskets and updated valve when carbon-locked.
Common faults at a glance
Quick reference of the issues we see most on this platform.
- AdBlue / SCR faults
- Turbo actuator failures
- EGR clogging