What is the Porsche PADM System?
Porsche Active Drivetrain Mounts (PADM) is an electronically controlled system that minimizes vibrations and adjusts drivetrain mount stiffness to improve handling, primarily in Porsche Sport Chrono-equipped models (991, 981, 718, 992). It uses magnetorheological fluid to switch between soft (comfort) and hard (performance) settings, often suffering from sensor failure rather than mechanical breakage.
How PADM Works:
- Active Stiffness: PADM uses a magnetorheological fluid (containing tiny iron particles) inside the engine/transmission mounts.
- Real-time Adjustment: An electromagnetic coil in the mount changes the viscosity of the fluid, making the mount stiffer to reduce engine movement during spirited driving, or softer for improved comfort, typically controlled via the Sport Chrono Package (Sport/Sport+ modes).
- Benefits: Reduces vibrations at idle while reducing mass movement for more precise handling and stability in corners.
PADM Fault and Common Issues:
- Common Failure: The system is notorious for throwing "PADM Fault / PADM Disabled" warnings. This is often caused by an internal sensor chip loosening or failing due to vibration rather than the entire mount breaking.
- Error Codes: Common diagnostic trouble codes (DTCs) include 001013 and 001023.
- Impact: When a fault occurs, the mounts usually default to a stiff setting, resulting in increased cabin vibration.
Models Affected:
PADM is commonly found on, but not limited to, the following, specifically when equipped with the Sport Chrono package:
- 991 (2011-2019)
- 981 / 718 (2012-2026)
- 992
Repair Alternatives
- Full Replacement: The official Porsche fix is replacing the entire active mount, which is very expensive.
- Sensor Replacement: Many specialists now offer, or recommend, replacing just the faulty internal sensor with upgraded aftermarket alternatives, such as Poporacing PADM sensor to save on costs.
- Disable/Code Out: The PADM system can be disabled via software, which stops the error messages but means losing the active functionality.
