Why did I choose the MB STAR C3

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Why did I choose the MB STAR C3

There is two parts to using the Mercedes Star Diagnostic tool, the first being the setup and the latter actually using it. As you can see above, their are a few leads involved to connect the Mercedes to the star machine.

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Why did I choose the Mb Star C3?

Owning 4 Mercedes and many others in the family, fault codes are very common and are difficult to uncover unless you own a Star Machine. The MB Star C3 can interact with cars from 1989 to now, which covers the majority of the cars I own. The ability to read troublesome stored codes and erase them once resolved is very useful and also saves money in the long run with the majority of independent garages charging £30-40 to scan your Mercedes.

How Hard is it to use the Mercedes Star Machine?

There is two parts to using the Mercedes Star Diagnostic tool, the first being the setup and the latter actually using it. As you can see above, their are a few leads involved to connect the Mercedes to the star machine.

*   Wire from ECU to the Multiplexor
*   Wire from Multiplexor to the Computer
*   Power Cable to the Laptop (It’s advised never to let the computer run out during diagnostics!)
*   Power pack if low battery that might die during the test

Once the wires have been connected up properly, start the iginition and you should wait until you see a lock appear in the bottom right corner of your computer (near internet signal). Once the lock is present, the computer is connected to the car, therefore start up the DAS/Xentury software and do the following:
*   Find your car using the menu provided (Car -> E Class -> W210 etc)
*   You will then be greeted with a popup notifying that the multiplexor is attempting to connect
*   Once connected, its fairly straight forward – You can perform tests or go into individual units
*   Using F1, F2 and F3, you will be able to navigate through stored fault codes and removing them with the F9 key
*   If faults are not removing, its best to print out the full test (button bottom right), which will contain unique MB Codes to show a mechanic

The Star machine enables you to find a problem, fix it and confirm that it is fixed by erasing the issue and then running another test. If you are feeling confident, you may feel like running some more complex tests i.e. Compression test. I had issues with the fuel injectors in my 320 CDi, therefore I performed a compression test, which was spot on but the second test was the “leak” test, which showed two injectors were faulty.

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Buy Mercedes Star Diagnostic Computer Tool

The complete kit can be bought from just £600, which includes all of the wires for the latest Mercedes Benz’s out and include the computer with necessary equipment. Of course, the price seems a lot, but so does paying £40 each time to have a diagnostic via an independent garage. You are able to do this yourself with limited knowledge aswell as charge friend to clear their faults. You can buy the Mercedes Star Machine Bundle straight from OBD2TOOL.

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Just because a star machine is marketed as the “go to” Mercedes error code scanner, it does not mean you cannot use any other type of scanner.


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Mercedes Benz MB Star C3 vs C4

Mb Star C3: It requires a laptop so that you can troubleshoot your Mercedes-Benz via Xentry software. While on paper it is slower than MB Star C4, it has proven to be a very reliable and robust scanner that is not plauged with WiFI connectivity issues like the Star C4.

MB Star C4 is the latest Mercedes-Benz wireless multiplexers that can connect to your PC via wireless connection. Being the latest Diagnostic Scanner for Mercedes-Benz it works faster, once you resolve any connectivity issues that is.

Frequently Asked Questions

What is DAS? – Diagnostic Assistance System – This is the full diagnostic system for Mercedes-Benz vehicles. All functions for diagnosis including reprogramming, configuration, initialization, fault diagnosis and guided diagnostic tests are contained within DAS.

All control unit software (reprogramming calibrations) is contained within the DAS software which is distributed monthly via DVD media.
All access and functionality required in regard the configuration via SCN Coding and/or CVN Coding is covered.

What is WIS-NET? – Workshop Information System – This is the complete workshop information system as developed by DaimlerChrysler for use in the servicing of Mercedes-Benz vehicles. Contained within are installation instructions, procedures, functional and technical specifications. There is some linkage from certain procedures in DAS to respective documents in WIS.

What can Mercedes Star Diagnostic Tool do? The system offers total diagnostic coverage of all engine, chassis and body systems:

Reading and re-setting of diagnostic trouble codes (DTC)
Real-time reading of dynamic data
Full component activation clearing and re-setting of adaptation values
Coding of all engine, chassis, body and instrumentation modules
Key configuration
Procedure for fitting Mercedes- Benz accessories through the D2B ring and MOST bus
Total ASSYST / ASSYST + control (Active Service System) to update on board service history

What is Workshop Green Key? This is a unique one-time key from the factory which is necessary in certain situations such as:

Disabling a key track
Replacing the ECU
Replacing security related control units
Replacing EIS

Typically the workshop key and EIS must be ordered togheter and the green key is used to perform the final programing of the EIS.

What does it mean MARRYING  a VIRGIN ECU and EIS? The ME (ECU=Engine Control Unit)  and  EIS (Electronic Ignition System) control module are electronically permanently married to each other after 40 engine starts. There is no factory procedure to undo this. This means that a used engine EIS or DAS control unit cannot be used on another vehicle. A new control unit can be installed for testing provided the 40 engine starts are not exceeded. Note that the new control unit must be variant coded before it can be used. If the 40 engine start cycles are not completed successfully resetting the counter to 0 (removing the version coding) is possible if  you disconnect the power from the ECU for at least 45 minutes.

What model years does Star Diagnostic Scanner work with? The Star Scanner should work on cars from 1989 up to 2015 for Mercedes Cars, Buses, Trucks, Sprinter Vans, Smart cars, Etc.
What can I do with obd2tool.com Star Diagnostic SD Connect Scanner C3 & C4?

Reading/Erasing Trouble Codes
Read Live Data
Adaption of Modules
Coding/Programming of Modules
Component Testing
Maintenance Information Consultation

What is Xentry? New software released by Benz Company after 04/2009 by diagnosis new cars. WIS.net : Workshop Information System EPC.net: Electronic Parts Catalogue STAR UTILITIES: the movement management system and self-test DAS: the automatically Diagnosis Assistance System ST Finder 2008: Part location finder

What is Smart TAN Code? It openes special function in DAS program with Smart cars 450/451/452/454 Developer model: Mercedes-Benz engineer mode, remove limitations and open more functions.

What is Benz Disassembly system? Video lessons to teach you how to remove each part from Benz cars with details order steps.

Which control units can MB Star Diagnostic Scanner with Xentry troubleshoot?

Engines (All Gasoline & Diesel Systems)
Transmissions and Electronic Selector Modules
Airmatic and Active Body Control Suspension Systems
Traction Systems: ESP / ASR / ETS / ABS / BAS / SBC braking systems
Supplementary Restraint Systems (SRS) / Airbag, All body modules OCP / UCP / LCP / SCM / SKF / KFB / RCM / DCM’s
Drive Authorisation System
Sam (Signal Acquisition) Modules
Electronic Ignition System (EIS)
Pneumatic System Equipment and ATA functions
Air Conditioning / climate control Systems
Instrument Cluster
Tyre Pressure Control
Parktronic System
Keyless Go
D2b Command & Audio Gateway (D2B and MOST networks)
TV Tuner
Headlamp Range Adjustment
Seat Electronics
Rvc, RST & Vario Roof modules
Automatic Clutch System ACS
M-Class Body Modules (AAM / EAM / DAS / SEM / VG Transfer Case)
Assyst & ASSYST + systems