PassThru is the direct link to all required diagnostic, service and maintenance data for Euro 5/6 vehicles, which must be made available by OE manufacturers. Ideal for quick and simple access to OEM data, and the perfect addition to existing diagnostic systems that enables you to act at any time.
Workshops that already use mega macs 66, mega macs 56, mega macs 42 SE or mega macs PC can of course use the corresponding VCI as a full PassThru interface. Nevertheless, it is worth making the small investment in mega macs PC x-Change as an addition to the existing diagnostic solution. The main reason for this is that flashing the required data of the OEM portals can take up to several hours. The diagnostic tool cannot be used for other work during this time, which often leads to a backlog of repair tasks. This costs time, money and sometimes even customers. For those who want to be on the safe side, mega macs PC x-Change is a valuable addition to the workshop and really makes the software solution work for you.
The PassThru function can be used on the following homologated passenger cars on the European market, from Euro 5 onwards and with hardware from Hella Gutmann Solutions:
Audi, BMW, Chevrolet, Ford, Lexus, Mercedes, Mini, Opel, Renault, Seat, Skoda, Smart, Toyota, Volkswagen
The following table lists the web pages of some vehicle manufacturers and importers. This allows you to call up the correct web page and access the corresponding repair and maintenance information according to category 1 (General and safety-related repair and maintenance information) and category 2 (Theft-related repair and maintenance information).
The following lists and searches have been compiled to the best of our knowledge. Hella Gutmann Solutions assumes no warranty or liability for the accuracy and completeness of the information and statements on the websites. Furthermore, Hella Gutmann Solutions is responsible for neither the links to the OEM portals nor their content.
When using several different OEM portals at the same time on one computer, complications can arise. Based on our experience, some vehicle manufacturers can be combined. However, depending on the use, including that of other programs, this combination can have a negative impact. For this reason, we recommend using just one vehicle manufacturer portal for each PC or laptop. Implementing a partition in the hard disk of a computer with separate operating systems is also an option. The system requirements of the vehicle manufacturers must always be observed.The vehicle manufacturer/importer may request the following data for registration in the online portals:
- Name and address of the automotive workshop
- Name of employee (and e-mail address if applicable)
- Billing data
- Evidence of VAT identification number of the automotive workshop
- Acceptance of the general terms and conditions of business of the respective vehicle manufacturer/importer
The terms of access to theft-related repair and maintenance information were first stipulated by the European Commission in the Euro 5 and Euro 6 regulations. In order to obtain this repair and maintenance information, the automotive workshop must complete an approval and authorisation process. The preconditions are as follows:
- Registration according to category 1 with the respective manufacturer
- Designation of those who are to be given access
- Copies of the identification documents of the operator and the designated person(s)
- Police clearance certificates of the operator and the designated person(s)
- Contract(s) of employment of the designated person(s)
- Business liability insurance
- Address of automotive workshop
- Approval as an automotive workshop
- Compliance with administrative processes
PassThru is a function for programming ECUs in accordance with the Euro 5 regulation. Since 01st March 2010, all OEMs have been obligated to provide independent workshops with technical repair information and to enable the reprogramming of ECUs. For programming, PassThru is used to establish a direct connection between the vehicle in the workshop and the manufacturer so that new ECU software can be installed.
The Euro 5 regulation also stipulates rules on the disclosure of information from the OEMs to the workshops regarding the permitted levels of exhaust emissions. Therefore, since the regulation was introduced, service manuals, technical instructions, wiring diagrams, fault codes, information on unique identification of vehicles as well as information on special tools must be released.
SAE J2534 is the international standard concerning the basis of communication for the programming of ECUs in the vehicle. Each one of the PassThru interfaces offered by Hella Gutmann has been developed and manufactured to fulfil the requirements of the J2534 standard.
The OEMs stipulate different preconditions for using their portals and therefore for programming the ECUs. These can be found on the website of the relevant manufacturer.
The use of PassThru requires mega macs PC, mega macs 42 SE, mega macs 56 or mega macs 66 with software version 49 SP 1 and a workshop PC with Internet access. In addition, the vehicle must be supplied with float voltage by means of an external charger.
Here, the software version of the diagnostic tool must match the software version of the HGS PassThru setup. These are available for download on the Hella Gutmann Solutions homepage.
mega macs PC, mega macs 42 SE, macs macs 56:
The VCI must be connected to the workshop PC directly via USB (not through a hub) and inserted into the OBD interface of the vehicle. The workshop PC should be connected to the Internet via a LAN cable (a stable WLAN Internet connection is also acceptable) and, if it is a notebook, should be connected to a current source. Any automatic standby or shutdown function must be deactivated on the PC.
mega macs 66:
The DT66 module must be inserted in the module slot of the mega macs 66 and connected to the OBD interface of the vehicle using the cable. The mega macs 66 must be connected to the workshop PC directly via USB (not through a hub). The workshop PC should be connected to the Internet via a LAN cable (a stable WLAN Internet connection is also acceptable) and, if it is a notebook, should be connected to a current source. Any automatic standby or shutdown function must be deactivated on the PC.
Connect the tools as described under point "Error! Reference source not found." Switch on the vehicle ignition and start the HGS PassThru communication test program. Then click the "Start test" button. The PC – VCI (mega macs 66) – vehicle connection is now tested and displayed with green or red arrows. See the user manual for a detailed description of the HGS PassThru communication test and for troubleshooting measures.
Programming is started via the relevant manufacturer portal. You must create an account in the portal to continue. The costs for this function vary depending on the manufacturer. A useful and up-to-date overview of the manufacturer websites can be found in the leaflet "Informationen über den Zugang zu technischen Daten bei den Fahrzeugherstellern" (Information on accessing technical data from vehicle manufacturers) from the German Federation for Motor Trades and Repairs (ZDK).
1. The PC must not be shut down/put on standby
2. The PC must not be in use for any other purpose
3. The firewall must be deactivated or adjusted (proxy)
4. The LAN connection must not be interrupted
5. The diagnostic tool cannot be used to carry out further work on the vehicle during this procedure
6. The vehicle must be provided with power from an external supply
7. Additional consumers in the vehicle should be deactivated (observe OEM information)
8. The USB connection must not be interrupted
Unless otherwise specified by the OEM, the ignition must be switched off for at least 30 seconds after programming the ECU. After switching the ignition back on, a complete system test should first be carried out and the fault memory should be read and deleted. During programming, faults that are typical for the system may occur.
The initial startup of the vehicle must be monitored closely. If necessary, a test drive should be carried out. Always follow the manufacturer-specific instructions to avoid a defect in the programmed ECU.
Nothing! The only requirement is a mega macs PC, mega macs 42 SE, mega macs 56 or mega macs 66 with software version 49 (SP1).
Vehicle manufacturers calculate different costs for the use of their portals. Furthermore, there is a separate portal for each vehicle manufacturer. A useful and up-to-date overview can be found in the leaflet "Informationen über den Zugang zu technischen Daten bei den Fahrzeugherstellern" (Information on accessing technical data from vehicle manufacturers) from the German Federation for Motor Trades and Repairs (ZDK).
High-speed Internet access is highly recommended, but is not absolutely essential. The time required to download the software from the OEM server depends largely on your download rate, so this time can be reduced significantly if you have a faster Internet connection.
The programming is dependent on which vehicle bus the communication is running on. The CAN bus is significantly faster than the K-line. In addition, the time required is dependent on the power output of the workshop PC used as well as on the volume of data to be overwritten. This data volume can range from a few kilobytes to several megabytes.
A distinction is made between three different cases:
1. If reprogramming is supported and a fault is encountered during programming,
the software in the ECU is overwritten again. This sets the ECU to the most
recent state despite the fault. In this case, the programming will simply take longer than it would without faults.
2. If reprogramming is not supported and a fault is encountered,
programming is aborted. If the programming can be reversed, the
ECU will not be up to date. However, the function of the ECU
3. If reprogramming is not supported and a fault is encountered,
the process is cancelled and the programming takes longer. If the programming cannot be restarted,
the function of the ECU will be compromised. This means that safe functioning
of the ECU is not guaranteed and it must therefore be replaced.
When using several different OEM portals at the same time on one computer, complications can arise. Based on our experience, some vehicle manufacturers can be combined. However, depending on the use, including that of other programs, this combination can have a negative impact. For this reason, we recommend using just one vehicle manufacturer portal for each PC or laptop. Implementing a partition in the hard disk of a computer with separate operating systems is also an option. The system requirements of the vehicle manufacturers must always be observed.
Functionality of HGS PassThru
The vehicle manufacturers provide regular software updates for the electronic control elements of the vehicle models available in their markets. An update through the workshop requires that the user first of all downloads the relevant update from the web portal of the respective vehicle manufacturer to the workshop computer (PC, laptop, tablet or other kind). Then the update can be forwarded via "HGS PassThru" to the vehicle in the workshop. The entire update process including the forwarding to the vehicle is also called the "flash" process. HGS PassThru merely ensures the data transport from the workshop computer to the vehicle in the workshop.
Exclusion and limitation of liability
HGS is not the producer of the data to be forwarded. HGS is not responsible for:
- the transfer of the data from the web portals of the vehicle manufacturers to the workshop computer (PC, laptop, tablet or other kind).
- the content and the completeness of the data records that are forwarded via HGS PassThru from the workshop computer to the vehicle.
- the power supply required for the forwarding process.
- the data cables required for the forwarding process, unless they are supplied by HGS.
Therefore, HGS cannot give any guarantee that the product or the data is free from defects in materials and workmanship, nor that the procedures mentioned above are working properly. Guarantee and liability are also excluded should the damage be based on the fact that the user has not or only insufficiently obeyed the specifications mentioned under point 3.
Furthermore, the liability of HGS is restricted to cases of deliberate or gross negligence. The latter exclusion of liability shall not apply to cases of damage to life, body and health.
Requirements for the operation of HGS PassThru
A vehicle on which a flash process is to be performed must be connected to a suitable external voltage stability device (charger) according to the requirements described in the manufacturer's web portal, as insufficient power supply may lead to an inadvertent abortion of the data forwarding process. Thus, before every flash process, the user of HGS PassThru must ensure that
- the workshop computer being used has an Internet connection meeting the manufacturer's requirements.
- he/she is working with the latest software version of the manufacturer's web portal (basic program and diagnostic area).
- the software and hardware being used, the entries made in the workshop computer and all further requirements of the manufacturer's portal are sufficient; above all, the user shall use the access/information/secure ID of the portal requested by the manufacturer (basic program and diagnostic area).
- he/she observes all safety regulations of the manufacturer.
- the ignition of the vehicle is switched on throughout the entire flash process, unless the manufacturer's web portal expressly stipulates otherwise.
- only cable connections (no wireless remote connections) are used between the workshop computer and the relevant vehicle, and that these cable connections are not disconnected until the flash process is complete, unless the manufacturer's web portal expressly stipulates otherwise.
- all cable connections are free of any damage.
- potential defects of the vehicle electrical system are repaired before starting the flash process.
- all tools of HGS used for the flash process are working with the latest software available.
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