Mercedes‑Benz is synonymous with quality engineering and innovation. To keep your vehicle performing at its best you need more than a generic code reader when faults arise. Our modern cars feature dozens of control units that handle everything from engine management and transmissions to active safety and infotainment. A single warning light could stem from an emissions sensor, a transmission adaptation or a misaligned camera. Identifying the root cause requires manufacturer‑level tools and expertise.
Benchmark Auto Diagnostic delivers mobile, dealer‑level diagnostics and coding services exclusively for Mercedes‑Benz, AMG and Smart vehicles. We come to your doorstep anywhere across central Scotland with official XENTRY Pass‑Thru EU equipment, bringing you the same capabilities as a main dealer without the hassle or expense of travelling to one.
What We Offer
Dealer‑Level Diagnostics
We perform a full system scan using XENTRY. This captures active, pending and historical fault codes across all control units and guides us through functional tests and live data analysis. You receive a comprehensive report with prioritised recommendations.
ADAS Calibration & Sensor Alignment
After windscreen replacement or suspension work, your cameras and radar sensors need recalibration. We perform both static and dynamic calibrations to ensure systems like Active Brake Assist and Lane‑Keeping Assist operate correctly.
Coding & Adaptations
Modern Mercedes vehicles have many configurable settings. We register new modules with SCN coding and enable hidden features via variant coding. We calibrate sensors, register batteries and activate comfort functions while ensuring everything remains legal.
Preventive Maintenance & Health Checks
Regular diagnostics can identify up to 80 % of car problems early. We offer health checks combining full diagnostics, battery tests and fluid inspections. For diesels we run DPF regenerations to burn off soot and advise on driving habits to avoid blockages.
Navigation & Infotainment Upgrades
Stay connected and on track. We update your maps via Mercedes’ online or manual map update service, activate Apple CarPlay and Android Auto so your infotainment screen becomes a controller for your smartphone, and diagnose issues with MBUX and COMAND systems.
Transparent Pricing & Coverage
Diagnostics start at £65 while dealers may charge up to £500. We travel across Glasgow, Edinburgh, Falkirk, Stirling, Fife and nearby towns. See our Pricing & Coverage page for details.
Dealer‑Level Equipment: XENTRY
The cornerstone of our service is Mercedes’ own XENTRY platform. It offers a near‑complete diagnostic scope, including quick tests, basic diagnostics, flashing and coding of control units, reading and clearing fault memory, and guided functional diagnosis.
Why Choose Us
Independent Specialist
We invest in the same tools and training as Mercedes dealerships, yet operate independently. This means flexible scheduling, lower prices and a focus on diagnostics rather than parts sales.
Transparent & Honest
Our mission is to provide accurate diagnosis without upselling. We explain what each fault means and prioritise repairs. We refuse to perform illegal modifications.
Mobile Convenience
We come to you, eliminating travel time, towing fees and dealer wait times. Our van carries power supplies, secure internet and calibration equipment.
Coverage Across Central Scotland
We cover Glasgow, Edinburgh, Falkirk, Stirling, Fife and surrounding areas. If you’re outside our standard zone, contact us for a custom quote.
How to Book
Visit our Book page. Provide your registration, model, postcode and a brief description of the issue. We will check compatibility, quote the job and arrange a convenient time.
FAQs
Do you cover warranty repairs? Our diagnostics identify faults; warranty repairs must be carried out by authorised dealers. Our reports help support your claim.
Can coding void my insurance? Feature activation is generally legal, but disabling emissions or safety systems is not. We only perform legal modifications.
How often should I get a diagnostics check? We recommend annual diagnostics or before long trips to catch issues early.
Do you service other brands? Yes. We also offer BMW/MINI and VAG diagnostics—see our other brand pages.