Modern Mercedes‑Benz vehicles are packed with complex electronic systems. When a warning light appears, a generic scanner cannot tell you the full story. We deliver dealer‑level diagnostics using official XENTRY Pass‑Thru EU equipment to identify root causes and provide clear repair recommendations.
How Our Diagnostics Work
OEM‑Grade Equipment
We use Daimler’s XENTRY Pass‑Thru EU system. Unlike generic code readers, XENTRY communicates with every control unit and provides guided test plans【505292192801396†L25-L36】. It allows us to flash and code modules, actuate components and read live data. Our software is kept current with Daimler’s servers.
Comprehensive System Scan
Your session begins with a full scan of all control units—engine, transmission, ESP/ABS, airbag, HVAC, infotainment and body. We capture active, pending and historic codes and note communication errors. Freeze‑frame data shows conditions at the time of fault.
Guided Test Plans & Live Data
After scanning we follow factory‑approved test plans: verifying sensor voltages, checking signal plausibility and comparing live data. For example, a NOx sensor fault may require running a DPF regeneration test at 500–600 °C【369952309737120†L166-L190】, while a steering angle error needs recalibration【677566034607976†L447-L475】.
Component Actuation & Calibration
XENTRY lets us actuate components (e.g. fuel injectors, EGR valves) and perform calibration tasks. We reset learnt values after replacement parts and register new batteries【743965944902576†L69-L119】. We align radar and camera sensors after repairs【677566034607976†L481-L503】.
Clear Reporting & Recommendations
We deliver a written report summarising faults, root causes and recommended repairs. We prioritise safety and drivability issues and never upsell unnecessary work.
What We Diagnose
Our diagnostics cover:
- Engine & Powertrain – misfires, turbo performance, fuel pressure, timing, EGR/DPF systems【369952309737120†L166-L190】
- Transmission & Drivetrain – shift quality, adaptation values, torque converter and 4MATIC calibration
- Braking & Stability – ABS/ESP faults, brake pressure sensors, steering angle calibration【677566034607976†L447-L475】
- Safety & Airbags – SRS control units, seat sensors, pre‑tensioners
- Comfort & Body – HVAC, windows, lights, central locking
- Driver Assistance & Cameras – radar, camera, parking sensors and calibrations【677566034607976†L481-L503】
- Infotainment & Connectivity – COMAND/MBUX, navigation, audio and Bluetooth
Why Choose Us
We use the same dealer equipment but at independent prices【193857764173949†L105-L124】. Our mobile service covers central Scotland and saves you time and money. We provide clear reports, honest advice and no upselling.
Frequently Asked Questions
How long does a session take? Typically 60–90 minutes, depending on the number of systems involved.
Will diagnostics fix my car? Diagnostics identify faults. Some issues like DPF regenerations can be resolved on the spot; others require mechanical repairs.
What if no faults are found? You gain peace of mind and a health report; the diagnostic fee still applies.
Ready to Book?
Schedule your diagnostic session via our booking page and we’ll come to you.