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

This warning message usually shows up due to a faulty PRE-SAFE system.

Are you interested to know more about this system?

Because, if that’s what you are looking for, you’re in the right place.

So, let’s get started…

What Is PRE-SAFE And What Does It Do?

It’s an advanced computerized safety mechanism.

It essentially prepares the passenger just before an impending collision or accident.

Here’s How PRE-SAFE Determines When A

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By tracking the way the driver interacts with the steering wheel & brakes. By monitoring the surrounding traffic.

And, to do all this, it takes the help of multiple sensors and cameras.

Here’s How PRESAFE Prepares The Occupant

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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.

Bugs in control software

The PRE-SAFE is a computerized mechanism.

And, guess what… it relies on a dedicated computer to function.

And, the computer itself depends on an algorithm.

If there is a bug in the algorithm, the PRE-SAFE won’t operate.

Flaws in the ABS and ESP

ABS, ESP, PRE-SAFE; all of these systems are interconnected.

Therefore, the fault of one will adversely affect the work of the other.

This may prompt the computer to trigger a warning for the PRESAFE system.

Defective Sensors

The PRE-SAFE relies on numerous sensors to function.

If one of them goes bad, it will render the PRESAFE useless.

Besides, harsh weather conditions can also put the PRE-SAFE in jeopardy.

This may prompt the computer to show up a warning for the PRESAFE system.

Key Takeaways

Get to the bottom of the problem before it’s too late.