Spare parts, diagnostics, workshop equipment, workshop concepts

New digital headlight testers by Bosch for modern headlight systems Fulfils new guidelines on headlight testing

  • Camera-based headlight tester for xenon and LED headlights
  • High precision thanks to laser positioning aid
  • User prompting and display of measurement results in real time on touchscreen display
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  • September 16, 2014
  • Spare parts, diagnostics, workshop equipment, workshop concepts
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press release

Within the past 10 years, the lighting technology for automobile headlights has developed rapidly. Modern xenon and LED systems have in the mean-time become very popular. The modern lighting systems cannot be ad¬justed with the necessary precision using conventional analogue headlight testers. Therefore, Bosch has developed a digital, camera-based headlight tester HTD 815 which makes the exact evaluation and adjustment of xenon, LED and halogen lighting systems possible.

Changed guidelines for the adjustment of headlights
Also the lawmakers have reacted to the technical developments and revised the guidelines for the testing of headlights during the general inspection. Herein defined are the areas of placement for the vehicles to be tested and for the test device with very low tolerances. Moreover, the precision of the systems must from now on be checked and recorded every other year. This guideline applies to all test centers of inspection organizations and all workshops that carry out general inspections. The new guide-line becomes effective on 1 January 2015 with a transitional period of 2 years for headlight adjustment areas that are already in operation.

Digital technology allows precise headlight testing
Due to the blue fringe around the light of xenon and LED headlights, it is not possible for the human eye to exactly recognize the cut-off line for these systems. Thus, the use of an analogue device often results in the headlights being adjusted too high or too low meaning the road is either insufficiently illuminated or the oncoming vehicles might be dazzled by the lights.

The CMOS camera technology of the digital tester HTD 815 is able to filter the blue fringe and exactly define the cut-off line. The laser technology supports the exactly positioning of the test device's light box in front of the vehicle or the alignment to the light source, no matter if halogen, xenon or LED projection units. Thanks to the quick image processing of the camera data, the measurement results are displayed in real time on the 5.7" touchscreen display. The user receives precise information about horizon¬tal and vertical deviations, the light's intensity, the roll and the yaw angle. Simple arrows on the display then guide through the adjustment process. The device confirms the exact adjustment of the headlight on the display and by means of an additional acoustic signal. The test results can be printed out on the spot via an integrated printer.

By means of software updates, the Bosch HTD 815 can be easily adapted to new and future headlight systems. Further accessories are optionally available, such as e.g. a sensor that automatically measures the installation height of the headlight, a height-adjustable rail system as well as a Blue-tooth interface for the connection with all other devices used in the work-shop's test lane.

Many more information on digital headlight testing is available at

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with a complete range of 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 products and services developed and manufactured in-house. More than 18,000 associates in 150 countries, as well as a global logistics network, ensure that some 650,000 different spare parts reach customers quickly and on time. In its “Automotive Service Solutions” operations, AA supplies testing and repair-shop technology, diagnostic software, service training, 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 17,000 workshops. In addition, AA is responsible for more than 1,000 “AutoCrew” partners.

Additional information can be accessed at

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. 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.”

Further information is available online at and,

PI8685 - September 16, 2014

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