What Does It Mean When My Mercedes Says Pre-Safe Functions Limited

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What Does It Mean When My Mercedes Says Pre-Safe
Functions Limited?
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This warning message usually shows up due to a
faulty PRE-SAFE system.
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Are you interested to know more about this system?
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Because, if thats what you are looking for,
youre in the right place.
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This presentation covers the following topics-

• What is PRE-SAFE?
• What does it do?
• Why "PRE-SAFE Functions Limited See Operator's
  Manual" message show up?

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So, lets get started
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What Is PRE-SAFE And What Does It Do?
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Its an advanced computerized safety mechanism.
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It essentially prepares the passenger just before
an impending collision or accident.
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Heres How PRE-SAFE Determines When A Crash Is
Imminent
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• By tracking the way the driver interacts with the
  steering wheel brakes.
• By monitoring the surrounding traffic.

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And, to do all this, it takes the help of
multiple sensors and cameras.
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Heres How PRE-SAFE Prepares The Occupant When A
Crash Is Imminent
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• By activating the autonomous braking.
• By tightening the seat belts and repositioning
  headrests and seats.
• By closing the sunroof and windows.

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Heres Why Mercedes Activates PRE-SAFE Functions
Limited See Operators Manual
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Bugs in control software
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The PRE-SAFE is a computerized mechanism.
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And, guess what it relies on a dedicated
computer to function.
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And, the computer itself depends on an algorithm.
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If there is a bug in the algorithm, the PRE-SAFE
wont operate.
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Flaws in the ABS and ESP
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ABS, ESP, PRE-SAFE all of these systems are
interconnected.
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Therefore, the fault of one will adversely affect
the work of the other.
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This may prompt the computer to trigger a warning
for the PRE-SAFE system.
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Defective Sensors
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The PRE-SAFE relies on numerous sensors to
function.
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If one of them goes bad, it will render the
PRE-SAFE useless.
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Besides, harsh weather conditions can also put
the PRE-SAFE in jeopardy.
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This may prompt the computer to show up a warning
for the PRE-SAFE system.
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Key Takeaways
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If your Mercedes displays the "PRE-SAFE Functions
Limited See Operator's Manual" message, don't
ignore it.
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Get to the bottom of the problem before its too
late.
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