Quick Summary “Active Brake Assist Functions Limited — See Owner’s Manual” means your Mercedes’s automatic emergency braking system has detected a fault and cannot guarantee full collision-avoidance intervention. Your standard brakes are unaffected. The most common causes are a dirty ...
Pre Safe Functions Limited Mercedes: Meaning, Causes & Real Fixes When your Mercedes displays the warning “Pre Safe Functions Limited”, it means that one or more sensors within the Pre-Safe safety system are malfunctioning, obstructed, or not communicating correctly, limiting ...
AdBlue Reset Mercedes: Causes, Codes & Complete Reset Procedure When your Mercedes displays an AdBlue warning or the dreaded “Engine Start Not Possible” message, it usually means the Selective Catalytic Reduction (SCR) system needs attention.This guide explains why AdBlue warnings ...