Mercedes Benz Group

Summary

• Brands Covered: Mercedes-Benz Cars, Mercedes-Benz Light Commercial Vehicles, EQ Models, Maybach, Smart 
• Tools: XENTRY Diagnosis VCI ( Bosch ), XENTRY Diagnosis LCV Adapter Cable (14-Pin), DoIP Adapter & Cat6 LAN Cable for 206 (C Class) & 223 (S Class) Chassis Onwards.
• Vehicle Coverage: 2004 - Current
• Functionality: Diagnostics, Guided Diagnostics, Module Programming, Wiring Diagrams, Full Technical Data, Service Data Upload, & Barcode Scanning.

Looking for a complete setup? Explore our Summer Promo Bundles for Mercedes diagnostics, available for a limited time only. 

Covered Brands and Software

Functionality

Give full descriptions and notes about the functionality and features

• Diagnostics
• Guided Diagnostics
• Security Access
• Module Programming
• Wiring Diagrams
• Full Technical Data
• Service Data Upload
• Service Data Write to Vehicle
• Key Reading
• Barcode Scanning
• Oscilloscope Functionality

Vehicle Age Coverage

The Mercedes-Benz Pass-Thru Kit supports cars and light commercial vehicles equipped with Euro 5 or Euro 6 engines — typically from 2010/2011 onwards. 

Note on DoIP Compatibility:

Mercedes-Benz states that for current passenger car and van models, DoIP flashing of the head unit and instrument cluster is not possible until the introduction of BN 206 (C-Class) and BN 223 (S-Class) chassis platforms. 

Lite Kit Coverage

The Mercedes-Benz Lite Kit offers broader coverage, supporting cars and light commercial vehicles from 2004 to current, including the latest DoIP platforms without flashing restrictions. 

Specific Models:

MERCEDES BENZ:

• A CLASS (168), (169), (176), (177)
• AMG (298)
• AMG GT (190), (192)
• B CLASS (242), (245), (246), (247)
• C CLASS (202), (203), (204), (205), (206)
• CL CLASS (215), (216)
• CLA CLASS (117), (118)
• CLE CLASS (236)
• CLK CLASS (208), (209)
• CLS CLASS (218), (219), (257)
• E CLASS (207), (210), (211), (212), (213), (214), (238)
• EQA / EQB CLASS (243)
• EQC CLASS (293)
• EQE CLASS (294), (295)
• EQS CLASS (296), (297)
• GLA CLASS (156), (247)
• GLB CLASS (247)
• GL CLASS (164)
• GLC CLASS (253), (254)
• GL/GLS CLASS (166)
• GLE CLASS (166), (167), (292)GLK CLASS (204)
• G WAGON (461), (463), (464), (465)
• M CLASS (163), (164)
• R CLASS (251)
• S CLASS (217), (220), (221), (222), (223)
• SL CLASS (230), (231), (232)
• SLC/SLK CLASS (172)
• SLK CLASS (170), (191)
• SLR CLASS (199)
• V CLASS (447), (448)
• X 290 AMG
• X CLASS (470), (471)
• CITAN (420)
• VIANO / VITO (447), (639)
• SPRINTER II, III UPTO 2013, III,
• SPRINTER 900, 907, 909, 910
• G 463 LANDAULET

SMART:

• FORTWO 450, 451
• ROADSTER 452
• SMART 453
• FOURFOUR 454

MAYBACH:

• 57 / 62 – (240)

Pass-Thru Support

The Mercedes-Benz Pass-Thru Kit allows direct communication with a vehicle’s ECU (Electronic Control Unit) using manufacturer-authorised software. It supports core functions such as diagnostics and control unit programming via a pass-thru interface. 

While programming is technically supported, performance may be limited. Flashing and coding operations—especially on newer DoIP (Diagnostics over IP) vehicles—can be slow, and are subject to functional restrictions. For example, Mercedes-Benz has noted that “flashing of head units and instrument clusters is not possible for current passenger car and van model series up to the introduction of BN 206 and BN 223.” 

Pass-Thru Score: 6 out of 10

This rating reflects: 

• Vehicle age coverage limits (Euro 5/6, typically 2010/2011 onwards) 

• Restrictions on DoIP vehicle programming 

• Slower processing times for flashing and coding 

• Cost of ownership not significantly lower than XENTRY Lite for multi-brand users 

Pass-thru remains a valuable option for independent garages or mobile diagnostics professionals needing periodic access to Mercedes-Benz systems—particularly when complemented by other brand coverage. 

Recommended Computer

• Xentry Diagnosis Lite Pad Tablet

  £2450 ex. VAT

Geographical Usage

Consider where you intend to use the tools, as it may require permission in some regions:

• Western Europe
• Eastern Europe & Russia
• North America
• South America
• Middle East
• Northern Africa
• Subsaharan Africa
• Australia / Oceania
• Asia Pacific

Registration Requirements

To access and operate Mercedes-Benz XENTRY diagnostic systems as an independent repairer, you must meet the following registration and compliance conditions: 

1. 1. SERMI Certification
2. 2. NASTF Registration
3. 3. VAT Registered
4. 4. Limited Company
5. 5. Company Registration Certificate
6. 6. Sole Trader letter from accountant
7. 7. Proof of Trading
8. 8. No Trademark infringement

Additional Resources: SERMI and NASTF (for the US and AUS regions).

SERMI (Security-Related Repair and Maintenance Information)

SERMI is a standardised certification required for independent workshops to access security-related vehicle data within the EU. It verifies the identity, integrity, and competence of technicians and businesses. 

NASTF (National Automotive Service Task Force)

Applicable primarily to users in the United States and Australia, NASTF registration allows access to OEM-secured vehicle information under Right to Repair legislation. 

Current SERMI Implementation by Country: 

For up-to-date SERMI application details, visit the official SERMI website. 

Need help applying for SERMI? Maverick Diagnostics can support workshops through the process.

Cost and Support

For UK and European workshops, the Mercedes Digital Service Booklet (DSB) is free to use upon registration. This enables seamless uploading of service data directly to the Mercedes-Benz portal—at no extra cost. 

Technical Information Subscriptions

Mercedes-Benz offers a suite of technical tools to support diagnostics and repair: 

• WIS (Workshop Information System) 
  Access repair manuals, wiring diagrams, and technical bulletins. 
  • From €10.40 (1 hour) to €542.00 (annual access) 

• XOT (Xentry Operation Time) 
  The modern replacement for ASRA—perfect for estimating repair times. 
  • From €6.40 (1 hour) to €738.00 (annual access) 

• TIPS (Technical Information for Problem Solving) 
  A must-have for Xentry users—helps reduce diagnostic time and pinpoint issues faster. 
  • From €5.20 (1 hour) to €183.00 (annual access) 
  • Mobile access supported 

NEW: Xentry Combo Package

All three subscriptions—WIS, XOT, and TIPS—in one credit-based system.

• One credit = access for 1 VIN for 24 hours
• Prices start at €19.00 (1 credit) to €170.00 (10 credits)

Ideal for specialists needing flexible, per-vehicle access. 

• Cost Per Hour: €10.40
• Ease of Use: 9/10
• Training Requirements: 5/10

Looking for a complete setup? Explore our Summer Promo Bundles for Mercedes diagnostics, available for a limited time only. 

Diagnostics Software Costs 

• Time credits available in hourly, daily, weekly, monthly, and annual options
• Pay-as-you-need structure—ideal for flexible workshop use

Ease of Use & Training 

• Ease of Use: 9/10 once basic training is completed 

• Training Requirements: 5/10 

• Included Training: 1-hour introductory session included with all Mercedes-Benz bundle packages 

• Additional Training: Online courses available for deeper system knowledge 

Updates and Technical Support

Mercedes-Benz’s Xentry software is updated quarterly, with each major update taking approximately 2–3 hours to install, provided a stable internet connection is available. 

In addition, daily ‘Addon’ updates are released to address critical patches and performance improvements. These are best installed at startup, as the software cannot be used during the update process. 
Typical time for daily updates: 15–20 minutes, assuming regular use. 
Please note: Mercedes allows operation on only one major update behind the current version. If your software is outdated beyond that, your StartKey will become invalid and the software will not launch. 

• Updates Per MonthUpdated Quarterly
• Time taken2-3 Hours
• Latest RequiredYes

Support Options 
Maverick Diagnostics provides several technical support routes: 

• Dealer Tool Support Subscription – £99/month 
  Ideal for workshops using official tools and requiring guidance on software management and operation. 

• Vehicle Technical Support (VTS) – £125/month 
  Suited for multi-brand and independent workshops, offering case-based technical support and diagnostic assistance. 

• Combined Support Package – £205/month 
  Includes both Dealer Tool and VTS support at a reduced bundled rate. 

These packages offer reliable access to technical insight, ensuring smoother operation and improved turnaround times in workshop environments. 

Additional Products

Enhance your diagnostic workflow with the following tools and accessories: 

Highly Recommended 

• 2D Handheld Barcode Scanner 
  Required for scanning QR codes on LED and Matrix Headlights during programming. 
  While smartphone apps exist, they’re often unreliable. A dedicated scanner ensures accurate, automatic input—especially important as some headlamp codes exceed 40 characters. 

• Battery Support Unit 
  Stable voltage is essential during programming, especially when multiple modules (e.g. Transmission & Engine or Left & Right Headlamps) are updated simultaneously. 
  We recommend the GYS Flash 121.12 CNT for consistent, workshop-grade battery stabilisation. 

Optional Add-ons 

• Docking Station 
  Keep your tablet or laptop fully connected and charged in the workshop. 

• Diagnostic Workstation Trolley 
  Organise and transport your diagnostic setup efficiently with a durable, wheeled trolley. 

Footnote

Important Information to Keep in Mind: 

• Separate Systems: 
  Due to the separation of Mercedes Truck into Daimler Truck, software for Trucks and Cars/Light Commercial Vehicles can no longer run on the same laptop or tablet. This applies to both Pass-Thru and Diagnosis Lite setups. 

• Training & ROI: 
  Dealer diagnostic tools offer excellent return on investment when operated by trained technicians. 
  Proper training ensures efficiency and minimises risk. 

• Essential Support & Updates: 
  Software can change daily. Tools require regular updates to stay functional. 
  Without maintenance, they may cease operation entirely. 

• IT Support by Maverick: 
  You fix the vehicles — we manage the IT. 
  The Maverick Helpdesk ensures your system is up to date and supported. 

• Usage Restrictions: 
  Dealer tools are not designed for: 

• Reprogramming second-hand modules 

• Vehicle remapping 

These actions violate global security and emissions regulations. 

• Connectivity Requirements: 
  Most dealer tools are cloud-based and require: 

• Stable internet speeds over 20 Mbps 

• A wired connection to a router or network switch for reliability 

• Xentry Login Policy: 
  Each technician must use their own personal login for Mercedes Xentry. 
  Sharing credentials with other users or third parties is strictly prohibited. 

• FBS4 Key Programming: 
  To gain authorisation for FBS4 key programming, technicians must complete training module T2814V.