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3 Planning of bodies
Acoustic ambient protection
For safety reasons, a sound generator is installed as
standard in the front and rear area as acoustic ambient
protection (code J2A). This is to make bystanders aware
of the eSprinter model series 907 as it approaches or
whilst it is driving in low-speed areas. The positions
of the sound generators are illustrated in the diagram
below.
1
Position of the sound generators (schematic diagram)
1
Front sound generator
2
Rear sound generator
Arrow Direction of travel
The sound generator is active up to a vehicle speed
of 18.6 mph (30 km/h) after every engine start and
switches off automatically when the vehicle is sta-
tionary or at vehicle speeds greater than 18.6 mph
(30 km/h). The rolling noise of the tires and the wind
noises from the vehicle are audible at speeds above
18.6 mph (30 km/h), so artificial noises from the
sound generator are no longer necessary. There is no
way to adjust the sound or volume and it cannot be
switched on or off. During forward travel, a neutral mur-
muring noise is generated that resembles the rolling
noise of the vehicle; when reversing, a pinging noise is
produced. The same sounds are used in all electrically
driven vehicles from Mercedes-Benz Cars.
24
Mercedes-Benz | Supplemental Guideline for eSprinter – Model Series 907, Edition 2023-8
⑴ NOTE
The Acoustic Vehicle Alerting System is an EU-required
(EU Regulation 540/2014) safety system. The European
type-approval certificates for the eSprinter 907 series
were granted based on the sound generator component
part positions, as well as the sound output certifica-
tion-relevant test results.
Modifications to the sound generator component part
positions and to the component parts in their immedi-
ate vicinity, as well as any changes affecting the sound
output, are therefore strongly discouraged.
The Upfitter is ultimately responsible for adherence to
all FMVSS or other applicable regulations.
2
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