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In te llig e nt tec hn o lo gy
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Intelligent technology
Notice about data recorded by
vehicle control modules
Your vehicle is not equipped with an Event Data Recorder (EDRl,
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders" .
Some state laws restrict t he retrieva l or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle
systems such as, for examp le, engine function, emission control, as
we ll as for the airbags and safety belts.
These electronic control modules also record vehic le-rela ted data
during norma l vehicle operation for diagnost ic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehic le speed, direction,
braking as we ll as restraint system use and performance in the
event of a crash or other condition . Stored data can only be read and
down loaded with special equipment. •
Electronic Stabilization Program (ESP)
General information
The ESP improves the vehicle stability.
I
A
Fig. 190 Center
console w ith ESP
switch
ESP is designed to help you maintain vehic le control in situa t ions
where the car approaches the limits of "grip", especially when
acce lerating and cornering . ESP reduces the risk of skidding and
improves stability under all road conditions .
The syst em opera tes across the ent ire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc -
tions, the ESP wil l also shut down .
H ow th e sys t e m work s
The Anti -Lock Brake System (ABS), Electronic Differential Lock (EDU
and the Anti -Slip Regulation System (ASR) are integrated in the elec-
tronic stabi lization program. In addition to the data provided by
these functions, the ESP control unit requires additional measure-
ment data provided by high performance sensors . The rotational
speed of the vehic le about its vert ica l axis, t he late ral acce leration
acting on the vehic le, the brake pressure and t he steering ang le are
all measured .
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