Pedestrian Protection, Basic Function - GF91.60-P-9906A

Model all (CAR) 

with code U60 (Pedestrian protection - Active hood) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

General 

Reducing the severity of an accident is particularly important in the case of a collision with weaker road users e.g pedestrians because they do not have their own "crumple zone". The pedestrian protection includes the following measures, which can mitigate the consequences of an accident:

• Deformation spaces in the area of the front bumper and between the hood and the component parts that lie under it
• Flexible vehicle shell structures in the rear part of the hood
• Active hood with pyrotechnical raising devices in the area of the hinges

Function requirements 

• Terminal 15 ON
• Vehicle speed 25 to 55 km/h

Function 

The sensors in the front bumper detect a collision with pedestrians or other objects. The Supplemental Restraint System (SRS) evaluates the sensor signals and decides whether to trigger the pedestrian protection. When the pedestrian protection is triggered, the hood is raised in the area of the A-pillars by two raising devices. The space between the hood and the component parts that lie below is enlarged. The additional deformation space gained partly absorbs the impact energy in a collision and can therefore reduce the extent of injuries.

The pedestrian protection may be actuated by mistake in a collision with other objects (e.g poles, guide posts or thick branches).

Raising the engine hood has no further effects on the deployment behavior of the SRS.

	Function schematics
	Trigger pedestrian protection, function schematic	Model 118, 167, 177, 243, 247 with code U60 (Pedestrian protection - Active hood)	PE91.60-P-2503-97A
		Model 223, 297 with code U60 (Pedestrian protection - Active hood)	PE91.60-P-2503-97B
		Model 213, 238, 257, 290 as of model year 2021 with code U60 (Pedestrian protection - Active hood)	PE91.60-P-2503-97C
		Model 206, 232, 254, 295 with code U60 (Pedestrian protection - Active hood)	PE91.60-P-2503-97D
	Further basic functions
	Supplemental restraint system control unit, basic function		GF91.60-P-9890A
	Pedestrian protection sensor, basic function		GF91.60-P-2016A
	Hood lifter, basic function		GF91.60-P-2017A