Safety Comes Standard
Safety is one of the first design principles of all Mercedes-Benz vehicles.
Read about our industry leading safety features below.
ESP9i consists of the following features:
Helps prevent lateral displacement in the event of gusting side winds.
The adaptive Electronic Stability Program ESP® version 9i has a better braking performance in the wet (Brake Disc Wipe) and a faster braking response (Electronic Brake Prefill) in an emergency than the preceding version. Pedal feedback and noise characteristics have also improved:
Brake Disc Wipe
In rainy conditions a slight cyclical brake pressure is built up. This wipes the film of water from the brake discs, so that full braking performance is assured in the event of hard braking.
Electronic Brake Prefill
If the driver's foot suddenly and rapidly moves off the accelerator, the brake linings are lightly engaged to eliminate the air gap between the lining and disc. This makes the full braking performance available for any potential braking.
EBD - electronic brake force distribution
This system distributes the brake pressure between front and rear axle to stabilise the vehicle. EBD supports the anti-lock braking system in this way.
ABS - Anti-Lock Braking System
Helps to prevent the wheels from locking.
ASR - Acceleration Skid Control
Regulates wheelspin by intervening in the engine management and by braking the driven wheels. A deactivation switch allows engine intervention to be switched off at lower speeds and the slip threshold to be raised.
BAS – Brake Assist System
Brake Assist identifies emergency braking situations on the basis of the speed with which the brake pedal is actuated and supports the driver in emergency braking by increasing the brake pressure.
ROM - Roll Over Mitigation
This system helps to detect rollover tendencies during manoeuvres a low speed and high lateral acceleration.
RMI - Roll Movement Intervention
This system helps to detect rollover tendencies in dynamic manoeuvres and in high-speed evasive manoeuvres with high lateral acceleration.
LAC - Load Adaptive Control
This system helps determine the gross vehicle weight and supports the ESP control function, depending on the vehicle load.
EUC - Enhanced Understeer Control
This system helps to stabilise the vehicle in the event of heavy understeer.
ESP® - trailer stabilisation (TSA - Trailer Stability Assist)
This system counteracts sinusoidal oscillations of the trailer in two phases. Sensors monitor the amplitude of the swinging movements. As soon as they detect an unstable situation, a first stabilising phase is initiated, consisting in an asymmetrical braking intervention at the front axle, alternating on the left and on the right sides. If this asymmetrical braking action proves insufficient, the second phase is added to the first. In this second phase the vehicle is slowed down by braking interventions at all four wheels and by an engine torque reduction; This system is active ex-factory if a trailer tow hitch is installed at the factory
ESP® - Electronic Stability Program
ESP® interfaces with both the braking system and the engine management. It continuously monitors the signals from the steering angle sensor, wheel speed sensors, lateral acceleration sensor and yaw sensor, allowing it to assist the driver if instability is detected. In critical situations, ESP® actively intervenes in the engine management and braking system and assists the driver by generating braking forces to restore directional stability. When ESP® and ASR interventions are taking place, the ESP® warning light comes on in the speedometer.