The PIWIS Tester 4 is the gold standard for Porsche diagnostics. It merges speed, security, and depth of control in a portable, future-ready package. For any shop serious about servicing modern Porsches, this isn't just an option—it's a necessity.
“If you work on Porsches, you work with PIWIS. Tester 4 makes sure you stay ahead of the curve.”
PIWIS Tester 4 (Porsche Integrated Workshop Information System) is the fourth generation of Porsche’s proprietary diagnostic and programming tool, designed to support the newest electrical architectures in vehicles released through 2024 and beyond Key Advancements over PIWIS 3 Next-Gen Vehicle Support
: It is built to interface with the latest 2024 car models and new Electric Vehicle (EV) models
, which require specific diagnostic protocols for high-voltage systems and advanced battery management. SFD Diagnostic Protection
: It provides technical support for SFD (Vehicle Diagnostic Protection), a secure unlock process required for many modern ECU operations. Wiring & Circuit Layouts
: Features enhanced graphical representations of physical connections and circuit layouts to help technicians map out complex electrical architectures. Essential Usage Requirements piwis tester 4
For critical operations like software updates or module programming, the following conditions must be met: Power Supply : A high-current external charger (at least
) is required to maintain system voltage during programming. PPN Connectivity : The user must be logged into the Porsche Partner Network (PPN) for authorized online updates and coding. External Media
: Certain updates, such as PCM (Porsche Communication Management), may require specific USB Type A+C storage media in conjunction with the tester. Environment Safety
: During "Write Remote Module" (WRM) procedures, electronic interference should be minimized by keeping only one hand-held transmitter in the vehicle and ensuring no other transponders are present. National Highway Traffic Safety Administration (.gov) Core Functionality
Like its predecessors, the PIWIS 4 handles the full spectrum of workshop tasks: HOUSE Automotive : Deep scanning for fault codes across all vehicle modules. Maintenance
: Service interval resets, brake bleeding, and component testing. Programming/Coding : Replacing control units and customizing vehicle features. of the hardware or a step-by-step guide for a specific procedure like an ECU update? Technical Information AfterSales - nhtsa The PIWIS Tester 4 is the gold standard
The PIWIS Tester 4 (PST4) is Porsche's latest professional diagnostic system, succeeding PIWIS 3 to support newer vehicle architectures. It is specifically designed to handle 2024–2025+ models and introduces critical support for electric vehicles (EVs) and SFD (Schutz Fahrzeug Diagnose) security protocols. Core Capabilities
Standard Diagnostics: Read and clear fault codes (DTCs), view real-time data streams, and perform service resets.
Advanced Programming: Perform automatic/manual coding, ECU reprogramming, and adaptations for replacement parts.
Guided Fault Finding (GFF): Generates step-by-step test plans based on fault codes, including relevant wiring diagrams.
Security & SFD: Unlocks protected diagnostic functions on the latest Porsche models that PIWIS 3 cannot access.
Specialized Modes: Often includes an Engineering Mode (E-Mode) for advanced development-level modifications and a standard Aftersales Mode (V-Mode) for daily workshop tasks. Quick Setup Guide “If you work on Porsches, you work with PIWIS
This is where the Piwis 4 separates itself from a standard OBD2 scanner.
1. Full System Diagnosis
2. Guided Fault Finding (GFF)
3. Coding & Programming
4. Special Functions
While a generic scanner struggles to read the transmission control unit on a Panamera, the Piwis Tester 4 immediately establishes a handshake with every single ECU (Electronic Control Unit): Engine, Transmission, ABS, Airbag, PDCC (active roll stabilization), PCM (Porsche Communication Management), PASM (active suspension), and even the seat occupancy sensors.