In brief
PHS Magnum in Chorula near Opole (4 km from the A4 junction) is an independent Mercedes-Benz Trucks workshop with factory Star Diagnosis (Xentry/DAS) diagnostics. We service the Actros (MP4/MP5), Arocs, Antos and Atego — OM 470/471/472/936 engines, Powershift gearboxes, AdBlue/SCR systems, EBS, and accident repairs with MirrorCam and PPC calibration. Mobile service on the A4 and in the Opole region. Specialisation: tractors pulling silo trailers and tankers.
Mercedes-Benz Trucks service near Opole — OEM Xentry diagnostics
PHS Magnum in Chorula (4 km from the A4 junction) runs an independent Mercedes-Benz tractor workshop with factory Mercedes Star Diagnosis (Xentry/DAS) — the full OEM system. A 14-bay hall covering the full range of repairs — from the OM 471 engine to Actros MP5 bodywork.
Mercedes Opole — for transport fleets operating in the Opole region and on the A4 towards Germany. Mobile Mercedes service with a 30-minute response to Opole and 70–90 minutes to Gliwice. The hall covers the full scope of repairs.
Mercedes-Benz models serviced
Actros MP5 (from 2018, the latest generation) — OM 471 (12.8L, 422–625 hp) and OM 470 (10.7L, 360–460 hp) engines. Powershift PS3 gearbox (12-speed), MUX bus (electronic multiplex). Full service including PPC and MirrorCam.
Actros MP4 (previous generation) — the most common in Polish transport. OM 471/OM 470 engines, Powershift PS2. Star Diagnosis, full support.
Antos — regional cargo (Euro 6), OM 936/OM 470 engines. Full service.
Arocs — construction (tippers, concrete mixers, off-road). OM 936/OM 470/OM 471 engines. Reinforced frames, auxiliary hydraulics.
Atego — distribution (from 18 t GVW). OM 936 engine, light Powershift. Full support.
Service scope
Star Diagnosis (Xentry/DAS) diagnostics
The Mercedes-Benz Trucks OEM system. All electronic vehicle systems. Fault reading and clearing, module programming, key coding, sensor calibration. Access to DAS (Diagnosis Assistance System) — interactive diagnostic procedures.
OM 470 / 471 / 472 engine repair
OM 471 (12.8L — the most common in the Actros):
- Head gasket replacement
- Cylinder head overhaul (valves, seats)
- Timing chain and tensioner replacement
- Bosch CP4 fuel pump repair
- Bosch piezoelectric injectors (overhaul)
- Turbocharger replacement
- DPF regeneration (forced burn-off)
OM 470 (10.7L — lower output):
- Full mechanical repair scope
- Common Rail diagnostics
OM 472 (15.6L — flagship):
- Full overhaul
- Specialist tooling required
Powershift repair (automated gearbox)
Powershift PS2/PS3 clutch replacement (specialist tools required), hydraulic module calibration, ATF oil change to MB 235.10 specification, repair of electromechanical control valves. Full calibration after repair.
AdBlue/SCR system repair
UREA dosers, AdBlue pumps, NOx sensors (upstream/downstream of the SCR), forced DPF regeneration, DPF replacement. Mercedes BlueTec system repair. Euro 6 documentation.
Brakes and EBS
Calliper overhaul, disc and pad replacement, Wabco/Knorr-Bremse modulator repair, wheel sensor replacement. Post-repair EBS test with a report.
Mercedes accident repair (insurance claims)
Actros MP4/MP5 cab straightening, structural member replacement, bodywork, MIG/MAG welding (ISO 9606-1 certified), polyurethane painting restoring the original MB colours and logos, replacement of glazing and interior components, MirrorCam and PPC calibration after the repair. Direct settlement with the insurer.
Mercedes Actros air conditioning
Air conditioning compressor repair (water ingress / electrical failures), cabin filter replacement, recharging with R1234yf (Euro 6) or R134a (older units). System diagnostics and calibration after module replacement.
Mobile Mercedes-Benz service
Reach: Opole in 30 minutes, the A4 (service areas, junctions) in 45–90 minutes. Mobile mechanic equipped with Star Diagnosis, a stock of MB wear parts and specialist tools.
OM engines — unit overview
The table below lists the Mercedes-Benz power units found in the tractors we service. Capacities and layouts are quoted per the manufacturer’s specification; when quoting a repair we always confirm the variant by VIN and a Star Diagnosis readout.
| Engine | Capacity / layout | Most common in | Typical repair scope |
|---|---|---|---|
| OM 936 | 7.7L, I6 | Atego, Antos, Arocs | Common Rail, AdBlue, clutch |
| OM 470 | 10.7L, I6 | Actros MP4/MP5, Antos | Common Rail, turbo, DPF |
| OM 471 | 12.8L, I6 | Actros MP4/MP5 | head gasket, timing chain, CP4, DPF |
| OM 472 | 15.6L, I6 | Actros (flagship) | full overhaul, special tooling |
Most common symptoms and diagnostic direction
A few fault patterns repeat in the daily servicing of Actros fleets. Below is a shortened symptom → likely cause path, which we confirm with a Star Diagnosis readout before the repair:
| Symptom | Likely cause | Action |
|---|---|---|
| Loss of power + SCR fault | NOx sensor, UREA doser, AdBlue pump | BlueTec system diagnostics, component replacement |
| Frequent DPF regeneration | soot-loaded filter, short routes | forced burn-off, DPF assessment |
| Juddering on gear changes | Powershift clutch calibration | hydraulic module recalibration |
| Leak under the OM 471 head | worn head gasket | gasket replacement, flatness check |
| No PPC function after windscreen replacement | de-calibrated radar/camera | PPC and MirrorCam calibration |
We can run EBS and pneumatics diagnostics on the road — more under EBS diagnostics and pneumatics repair. Mercedes tractors pulling specialist trailers are serviced together with the silo trailer service and trailer work, and emergency call-outs are handled under roadside breakdown assistance.
Long-term cooperation
Mercedes-Benz fleets of more than 3 vehicles — a service care offer with an account manager, servicing schedule, monthly reporting and contract pricing. Ask for an offer.
Contact
Mercedes-Benz Trucks service, Star Diagnosis, accident repairs and mobile service on the A4: +48 602 716 551. Base: Chorula near Opole, 4 km from the A4 junction. Send us the fault description and the model (ideally with the VIN) and we will prepare a repair path and a quote.
