Radar sensors

HELLA has been manufacturing radar sensors in the 24 GHz narrow-band range for over a decade. Back in 2005, HELLA introduced the first generation of 24 GHz radar sensors. The sensor system is compatible with the now established standard functions of blind spot detection, lane change assistant and rear parking assistance. 


The radar sensor senses and evaluates speed, angle and distance information with respect to objects up to 70 meters behind the vehicle. The LFMSK (linear frequency modulation shift keying) method has been used in this application ever since the first generation of devices.


When this method is applied, the distance and relative speed of multiple targets can be measured and determined with just one signal (chirp) whose frequency changes over time.


The third radar generation uses an advanced FM variant whose modulation bandwidth is limited to max. 200 MHz. The system operates at an average transmission power of 13 dBm (EIRP) in a frequency band between 24.05 and 24.25 GHz. The resulting spatial resolution of 0.75 m is suitable for the rear-vehicle functions implemented.


The monopulse method is used for determining angles. The system carries out a phase comparison of the radar reflections across the different receiving paths using specific signal-processing approaches.


The fourth generation of radar sensors integrates an additional safety function ─ the exit assistant. This makes it possible to detect dangerous situations (e.g. passing vehicles) at an early stage before exiting the vehicle as well as warn vehicle occupants.

For more safety on the road - ADAS solutions from HELLA

As an electronics expert with original equipment and diagnostic expertise, HELLA offers a broad product portfolio in the independent aftermarket - including for the important area of advanced driver assistance systems, or ADAS for short. After all, the safety of all road users is paramount. HELLA has three highlights in its portfolio that are essential for ADAS: the 24 GHz rear radar sensor, the parking aid with ultrasonic sensors and the rain/light sensor. All three components make a decisive contribution to greater safety on the road.
Thanks to HELLA's electronics expertise and HELLA Gutmann's diagnostic know-how, you get combined ADAS solutions from a single source. You can find all relevant information in the video.


  • The small size and good transmission properties of the 24 GHz technology allow these sensors to be concealed behind the bumper or integrated in it
  • Frequency modulation and antenna size are perfectly harmonized
  • Mature mass production of products, functions and installation
  • Ideal value for money compared to other radar technologies


Universal parts - spare parts that are not vehicle specific

The universal parts catalogue allows you to search specifically for products that are not vehicle specific, from the areas of Lighting and Electrics/Electronics.

The focus is placed on the following target groups:

  • Trucks,
  • Trailers,
  • Agricultural vehicles/construction equipment and
  • Buses/caravans.
Universal parts catalogue

Vehicle-specific spare parts

Recambios para vehículos específicos

You can easily find our online catalog concept. You can thus for example enter the respective vehicle via our comprehensive manufacturer list, its type designation or the engine code.


And for additional information, we provide all crucial product information, such as

  • article information,
  • assembly instructions,
  • safety data sheets or
  • OE numbers

at the same time.

Vehicle-specific spare parts

Library as a means of communication

In this database, you will find marketing documents such as product brochures, brief information links to HELLA websites, apps and tools, and also videos. You can search the database quickly and easily by entering various keywords, e.g. the product name, part number, relevant system or components, or you can simply use the drop-down filters.

Brief information

Hella catalog app

With our catalog app, you can find HELLA products for passenger and commercial vehicles quickly and easily. The intuitive user prompting will lead you to the right result in a few steps -- incredibly easy and straightforward: simply choose vehicle type, brand and model and suitable HELLA products will be displayed for you. The results are presented clearly and sorted according to assemblies and product areas. You can also view additional information, images, technical data and product comparisons.

Communication media library

In this database you will find marketing documents including Product Brochures, Brief Information, links to HELLA websites, apps & tools and videos. Quickly and easily search the database by entering different keywords, for example the product name, part number, relevant system or components, or simply use the dropdown filters. You can view, download, or send the documents.

Short info

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