AGS – Active Grille Shutter Removal

Démontage de l'AGS (Active Grille Shutter) disables the ECU/BCM logic that controls the front active grille shutters. These shutters open and close to balance cooling and aerodynamics; when the mechatronic actuator, position sensor or wiring fails, the system raises DTCs and can force limp strategies. With this calibration the AGS logic is bypassed so the vehicle runs normally without AGS-related errors.

What it solves: persistent AGS faults (stuck open/closed), broken actuator gears, position sensor errors, wiring corrosion, or missing shutters after front-end modifications.

Typical fault codes include examples like P059F (Active Grille Air Shutter “A” Performance/Stuck Off), P069E / manufacturer-specific “Front shutter blocked” and similar AGS monitoring DTCs depending on make/model.

Quand utiliser

• Front-end repair or aftermarket bumper/IC install where the shutter assembly is removed or interferes with fitment.
• Actuator or position sensor failure causing recurring DTCs and warning messages.
• Cold climate icing or debris repeatedly blocking shutters.
• Track/off-road usage where aerodynamic shutters are unnecessary.

Aperçu technique

The AGS system typically consists of a DC actuator with integrated position feedback, a control module (BCM/PCM integration varies), and diagnostic routines that validate travel times, end-stop position and electrical integrity. When the assembly is removed or jammed, the ECU/BCM logs DTCs and may alter cooling fan or thermal strategies.

• Entrées : coolant and ambient temperature, vehicle speed, A/C load, desired drag reduction.
• Sorties : commanded shutter angle, actuator drive, plausibility checks and fault timers.
• Diagnostics : circuit/open/short tests, travel time plausibility, stuck/blocked detection.

Le Déménagement AGS calibration disables the monitoring logic and related readiness checks specific to the shutter subsystem, leaving radiator fan and engine thermal control fully operational through standard ECU maps.

Comment ça marche

1. Évaluation : identify AGS architecture (ECU-integrated vs BCM-managed) and platform DTC set.
2. Étalonnage : apply shutter logic bypass and suppress only the necessary AGS DTCs.
3. Flash & Verify : flash the file with your tool; confirm no AGS faults and normal cooling behavior.

Compatibilité

Supported on many petrol and diesel platforms (Bosch, Siemens/Continental, Delphi, Denso, Magneti Marelli, etc.). Use the live database below to check coverage for your ECU/ID; if not listed, send your read and we’ll add support.

Background reading on vehicle grilles and airflow:
Wikipedia – Grille (car).