Press release #Automotive Aftermarket

Bosch Esitronic workshop software allows comprehensive work on access-protected Mercedes-Benz vehicles

Bosch offers a convenient workshop solution for diagnosis and maintenance of protected vehicle electronics

  • Mercedes-Benz AG uses a two-stage concept to protect its vehicles’ electronic systems against manipulation and unauthorized access
  • Working on access-protected Mercedes-Benz vehicles with Esitronic Update 2020/1.02 from Bosch still possible without restrictions
  • Internet connection and latest Bosch KTS diagnostic tester required for the unlocking
Nico Krespach

Nico Krespach >


Karlsruhe/Plochingen – From September 2020, all new vehicle models in Europe must be equipped with secure diagnostic access in accordance with EU Regulation 2018/858. This regulation provides for the protection of vehicle electronics against manipulation and unauthorized access. Following FCA (Fiat Chrysler Automobiles), Mercedes-Benz AG, among others, is now also introducing such safety measures in a two-stage concept. By means of the update 2020/1.02, workshops using Bosch Esitronic workshop software will receive the necessary software update to perform comprehensive diagnostic, service and repair tasks without any restrictions even on Mercedes-Benz vehicles with secured diagnostic access.

In order to meet the requirements of the mentioned EU regulation, the vehicle manufacturers work on safety concepts that often include restrictions on access to the vehicle electronics. For this purpose and as a first step, Mercedes-Benz AG is using an extension of the so-called Seed & Key procedure. This is based on a special algorithm that is required to enable the protected functions. The mode of operation is similar to that of a Security Gateway. However, the Bosch solution does not require any registration at the vehicle-manufacturer portal.

Without unlocking, certain functions such as calibration of driver assistance systems will be blocked and future access will be restricted to ECU identification, readout of actual values as well as readout or deletion of the fault memory. Several Mercedes-Benz models produced as of the last quarter of 2019 are already equipped with Seed & Key.

Unlocking of the diagnostic interface without special login data

Regular updates of Bosch Esitronic workshop software allow workshops to continue working on Mercedes-Benz vehicles protected by means of Seed & Key without any restrictions. No special access data are required, nor is registration via the vehicle manufacturer portal necessary. For the unlocking, the workshop only needs an internet connection and a Bosch diagnostic tester of the current generation such as KTS 560, 590 or 350. As of mid 2020, KTS 250 will also support this function.

In the course of the year, Mercedes-Benz AG plans to further develop its safety concept as a second step. Esitronic users will be informed in due time.

Bosch had already prepared its workshop software for working on FCA vehicles (Fiat Chrysler Automobiles) with Security Gateway with the Service Pack 2019/03. In this case, internet connection is used to exchange safety certificates between modern Bosch KTS diagnostic testers such as KTS 560, 590 and 350 as well as of end 2020 KTS 250 and the vehicle manufacturer server thus granting access to the vehicle electronics. In line with the FCA regulations, each individual mechanic must register beforehand in order to obtain a fee-based license for activation. Afterwards, Esitronic can be used as usual to perform comprehensive diagnosis on protected FCA vehicles.

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with modern diagnostic and repair-shop equipment and a wide range of spare parts – from new and exchange parts to repair solutions – for passenger cars and commercial vehicles. Its product portfolio includes products made as Bosch original equipment, as well as aftermarket-specific products and services developed and manufactured in-house. About 13,000 associates in more than 150 countries, as well as a global logistics network, ensure that spare parts reach customers quickly and on time. AA supplies testing and repair-shop technology, diagnostic software, service training courses, and information services. In addition, the division is responsible for the “Bosch Service” repair-shop franchise, one of the world’s largest independent chains of repair shops, with some 15,000 workshops, and more than 1,000 “AutoCrew” partners.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 421,000 associates worldwide (as of December 31, 2022). The company generated sales of 88.2 billion euros in 2022. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT provider, Bosch offers innovative solutions for smart homes, Industry 4.0, and connected mobility. Bosch is pursuing a vision of mobility that is sustainable, safe, and exciting. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to facilitate connected living with products and solutions that either contain artificial intelligence (AI) or have been developed or manufactured with its help. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. With its more than 400 locations worldwide, the Bosch Group has been carbon neutral since the first quarter of 2020. The basis for the company’s future growth is its innovative strength. At 136 locations across the globe, Bosch employs some 85,500 associates in research and development, of which nearly 44,000 are software engineers.

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