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Long-Range Radar (LRR) Sensor
The Touareg uses two long-range radar sensors located
next to the fog lamps. They are 3rd Generation radar
sensors with the following features:
• Each sensor has four radar aerial units
• They have a frequency of 77 GHz
• To keep ice off at lower temperatures, the LRR has a
heater
• Range: Up to 656 ft (200 m)
• Speed: 0 - 130 mph (0 - 210 km/h)
This new generation of dual radar sensors allows the entire
width of a three-lane road to be scanned, from 99 feet
(30 m) away.
The Distance Regulation Control Module J428 is the
master, and it is located inboard of the right fog lamp.
Distance Regulation Control Module 2 J850 is the slave
and is located inboard of the left fog lamp.
Forward Radar Systems
Image of 201 5 Touareg J850
A heater integrated in the sensor
surface prevents or reduces ice
and snow deposits. The LRR sensor
is shown, however, both types of
sensors are heated.
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Heater Element
Sensor Dome
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