iCarsoft POR V4.0 for Porsche

Porsche is a brand where module integrity matters. The PCM, the gearbox (Tiptronic or PDK), the PSM / ABS, the air suspension (PASM, Cayenne air suspension), and on later models a long list of comfort and chassis modules all need to be consistent for the car to drive correctly. The POR V4.0 talks to those modules the way PIWIS talks to them. Porsche-specific freeze frame, the right live-data PIDs, bidirectional tests on supported components. All without a PIWIS subscription.

Which vehicles the iCarsoft POR V4.0 covers

The iCarsoft POR V4.0 is focused on Porsche brands. Coverage and the depth of specific service routines vary by model year and ECU configuration. Verify your exact vehicle in the coverage list before relying on a specific job.

• Porsche

All-system diagnostics that go beyond OBD2

Porsche all-system means PCM / DME (engine), TCU / GST (gearbox, Tiptronic or PDK), PSM (Porsche Stability Management, chassis and ABS combined module), airbag, comfort and convenience (door modules, central locking, alarm), instrument cluster (Kombi), climate (Klima), and on supported models PASM (Porsche Active Suspension Management), the air suspension on Cayenne and Panamera, PCCB-equipped braking systems and on Taycan the HV battery management modules (diagnostics, not full HV service). The POR V4.0 reads codes, captures freeze frame and live data from each of these where supported, and reads ECU software identifiers for cross-referencing against PIWIS-known software levels.

Coverage is strongest on 996 onwards (the platform-shift after which Porsche's diagnostic architecture standardised). Pre-996 Boxsters (986) are supported on KWP-2000 with the appropriate diagnostic protocols, though the depth of the newer-platform modules is not replicated on the older cars (they are simpler cars diagnostically too).

Bidirectional active tests for verified repairs

Bidirectional control on Porsche covers the workshop-critical tests: cooling-fan stages on water-cooled engines, A/C clutch engagement, secondary air injection pump test (the 996 / 997 SAI failure is one of the most common Porsche faults and bidirectional confirmation saves a pump-replacement diagnosis), EPB caliper retraction for rear-pad service on supported models, ABS modulator solenoid cycling for a brake bleed, and on diesel Cayenne and Macan models the EGR-valve and DPF-related actuators.

Where the POR V4.0 stops short of PIWIS is in some specific Porsche routines: PCCB conditioning, PASM accelerometer calibration after sensor replacement, some Macan and Taycan-specific learning procedures. For 90% of independent Porsche diagnostic and service work, the POR V4.0 covers it. For the remaining 10% (and anyone doing main-dealer-level work), PIWIS remains relevant.

What the POR V4.0 looks like in practice

Four signature workflows where the tool earns its place:

• 996 / 997 secondary air injection pump diagnosis. P0410 / P1411 on a 996 or 997 is one of the most common Porsche faults, but the SAI pump itself is rarely the cause. Bidirectionally command the pump to run and check vacuum and airflow downstream. If the pump runs, the issue is the SAI vacuum solenoid, the check valves or the catalyst-monitor strategy. Save the cost of a needless pump replacement.
• Cayenne and Panamera air suspension fault retrieval. Air suspension faults on 957 / 958 Cayenne and 970 / 971 Panamera live in a dedicated module. The POR V4.0 reads the suspension module fault history, freeze frame at the time of fault, and live ride-height-sensor data, pointing you at the right corner of the car before you drop a compressor unit you did not need.
• Macan 3.0 TDI DPF and AdBlue diagnostics. Pre-facelift Macan diesels arrive at independent workshops with after-treatment faults and DPF warnings regularly. The POR V4.0 reads soot loading, AdBlue tank level and NOx sensor data, runs forced DPF regeneration on supported model years, and clears the warning chain after the underlying repair is verified.
• PDK gearbox software identifier and adaptation reset. Hesitation on a PDK gearbox is often adaptation drift. The POR V4.0 reads the gearbox software identifier (so you can verify the current software level vs. known good), pulls the gearbox fault memory and freeze frame, and resets clutch adaptations on supported models. Typical workflow before deciding whether the car needs a fluid-and-adaptation service or deeper mechanical work.

Service and reset functions on this tool

Routine availability depends on the vehicle. Below are the routines the POR V4.0 performs on supported models. Always follow the on-screen prerequisites (ignition state, battery voltage, fuel level for diesel regen).

• Oil and service interval reset. Resets the oil-life counter and service-due indicator after an oil and filter change. When: After every engine oil change or extended service.
• Throttle body adaptation and relearn. Resets and re-teaches the closed-throttle position to the ECU. When: After cleaning or replacing the throttle body, or after a battery disconnection on some makes.
• Electronic parking brake (EPB) service. Retracts the EPB caliper pistons so brake pads can be replaced, then reinitialises the system. When: Before replacing rear brake pads or discs on any vehicle with an electronic parking brake.
• Steering angle sensor (SAS) calibration. Teaches the steering angle sensor where straight-ahead is, so ESP and stability control behave correctly. When: After wheel alignment, steering rack replacement, steering column work, or any ABS / SRS warning related to SAS.
• DPF (diesel particulate filter) regeneration. Forces a manual regeneration cycle to burn off accumulated soot when passive regen has failed. When: After repeated short trips, after a sensor or EGR repair, or when the DPF warning appears.
• Injector coding. Writes the calibration code of each new diesel injector into the ECU so fuel delivery is balanced. When: After replacing one or more diesel injectors.
• ABS bleeding. Actuates the ABS and ESP modulator solenoids so trapped air can be bled out of the hydraulic block. When: After replacing the ABS modulator, master cylinder, or bleeding the brakes with air-in-the-block symptoms.
• TPMS (tyre pressure monitor) reset and relearn. Re-registers wheel-mounted TPMS sensor IDs after tyre rotation, new wheels or sensor replacement. When: After fitting new sensors, changing wheels, or rotating tyres on systems that do not auto-relearn.
• Battery management and registration. Tells the body control module that a new battery has been fitted and (for AGM / EFB) what type it is. When: Any time the battery is replaced on a vehicle with intelligent charging and start-stop.
• Air suspension service. Reads, calibrates and resets air suspension control modules including compressor and valve actuation tests. When: After replacing a compressor, valve block, height sensor or after suspension-related fault codes.
• A/C system reset and learn. Resets and re-learns climate control flap motors, compressor adaptation and refrigerant pressure logic. When: After A/C component replacement, refrigerant service, or climate-control module replacement.
• Headlight initialisation and range adjustment. Calibrates headlight aim sensors and adaptive headlight modules after replacement or alignment. When: After headlight replacement, suspension changes that affect ride height, or related fault codes.
• Transmission adaptation and learn. Resets shift adaptation values and triggers a relearn of clutch wear and shift timing on supported automatic and dual-clutch gearboxes. When: After a transmission fluid and filter service, clutch replacement on DCT, or major adaptation drift causing harsh shifts.
• AdBlue and SCR system reset. Resets AdBlue tank-level sensor, NOx sensor adaptation and SCR-related counters on supported diesels. When: After AdBlue tank refill on vehicles that need a reset, NOx sensor replacement, or SCR fault clearing.
• NOx sensor reset and learn. Performs the relearn routine after replacing one or both NOx sensors on diesels with SCR. When: After NOx sensor replacement or after persistent emissions-related fault codes that point to the NOx sensor.
• High-voltage battery system diagnostics. Reads HV battery management module fault codes, cell-group voltages and pack-temperature data on supported hybrids and EVs. When: After an HV warning, hybrid system fault, or before purchase of a used hybrid or EV.
• Radar and camera (ADAS) calibration. Initiates calibration routines for ADAS sensors after windscreen replacement, sensor swap or related fault codes. When: After windscreen replacement on ADAS-equipped vehicles, after radar or camera replacement, or after dashboard ADAS warnings.

Specifications

Supported diagnostic protocols on this variant: OBD-II, CAN, CAN-FD, K-Line, KWP-2000.

The POR V4.0 will be delivered with Porsche software pre-installed, and 2 further vehicle makes can be downloaded free of charge.