UAZ PATRIOT Operation Manual page 60

When a motor vehicle approaches a hindrance, an intermittent
acoustic tone signal is given with tone frequency of 1-3 kHz.
The interval time between tone "sendings" reduces as the
distance to the hindrance reduces, up to continuous horn at a
distance of 60 + 5 cm and less.
WARNING! Unauthorized modifications to the DPS circuit
diagram and design are strictly prohibited.
When operating, keep the parking system sensors (PSS) clean,
do not subject them to mechanical impacts. PSS surface should
be cleaned of contaminations using a soft cloth moistened with a
mild soap solution. When removing contaminations from the PSS
surface avoid applying pressure to its central part in order to prevent
damages.
DPS may not give a horn for a hindrance from behind in the
following cases:
- hindrance is located at a distance of less than 0.1 m;
- hindrance is a sharp or thin object (ropes, chains), posts with
diameter of max. 10 cm;
- hindrance surface of absorbent material ultrasound (snow,
clothes or other porous materials);
- hindrance has smooth round shape or is smooth inclined
surface (heavy inclination);
- the system's sensors are covered with snow, ice or dirt;
Fig. 3.16. DPS sensor layout:
A, B, C, D — rear sensors;
E, F, G, H — front sensors
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