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Fitment notes: 12V auxiliary battery; located in front trunk; powers vehicle electronics and accessories while main high-voltage battery powers drivetrain
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Every control module on the 2025-2026 Porsche Taycan Turbo S — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Electric Motor Control Unit Rear (MCU-R)6.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Rear motor assembly, integrated with inverter housing above rear axle
🔧 PIWIS IV + PPN online
⚠️ Primary drive motor. Requires rear subframe lowering and HV lockout. Component protection to BMS and PECU.
Two-Speed Transmission Control Unit (TCU)4.2 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Rear motor transmission housing, integrated with rear drive unit
🔧 PIWIS IV + PPN online
⚠️ Controls 2-speed planetary gearbox on rear axle. Adaptive shift learning required after coding.
Onboard Charger Control Unit (OBC)3.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Front luggage compartment, right side integrated with PECU
🔧 PIWIS IV + PPN online
⚠️ 11 kW AC charger (22.5 kW optional). Charging system test required after replacement.
Electric Power Steering Control Unit (EPS)2.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Steering column, integrated with steering assist motor
🔧 PIWIS IV + PPN online
⚠️ Steering angle sensor calibration and straight-ahead position learning required after coding.
Rear Axle Steering Control Unit (RAS)2.2 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Rear subframe, center mounted above rear axle
🔧 PIWIS IV + PPN online
⚠️ Standard on Turbo S. Rear wheel alignment and steering angle calibration mandatory after replacement.
Porsche Communication Management Control Unit (PCM)2.0 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Dashboard, center stack behind 10.9-inch touchscreen
🔧 PIWIS IV + PPN online
⚠️ PCM 6.5 or later system expected. Navigation, Apple CarPlay, Android Auto. Requires online activation for premium features.
Thermal Management Control Unit (TMC)2.0 hr R&Rsecurity gateway +0.7 hr▸ programming details
📍 Front luggage compartment, center firewall
🔧 PIWIS IV + PPN online
⚠️ Controls battery cooling/heating, motor cooling, and cabin HVAC integration. Complex refrigerant system.
Anti-lock Brake System / Porsche Stability Management Control Unit (ABS/PSM)1.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Front luggage compartment, right side firewall
🔧 PIWIS IV + PPN online
⚠️ Integrated with regenerative braking coordination. Brake bleed and system calibration required after replacement.
Climate Control Unit (CCU)1.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Dashboard, center stack behind climate control panel
🔧 PIWIS IV
⚠️ 3-zone automatic climate control. Heat pump system on electric vehicle requires refrigerant handling certification.
Porsche Dynamic Light System Plus Control Unit Right (PDLS-R)1.5 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Right headlight assembly, integrated in housing
🔧 PIWIS IV
⚠️ LED matrix headlight. Headlight aim calibration required. Left and right modules are not interchangeable.
📍 Dashboard, behind steering wheel in instrument binnacle
🔧 PIWIS IV + PPN online
⚠️ Fully digital 16.8-inch curved display. Mileage programming requires online authentication and legal documentation. 2025+ may have updated display hardware.
Central Gateway Control Unit (CGW)1.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Dashboard, left side behind lower trim panel near fuse box
🔧 PIWIS IV + PPN online
⚠️ Security gateway enforces component protection. Replacement requires all modules to be re-coded and authenticated.
Airbag Control Unit (ACU)1.2 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Center console, below center stack behind trim panel
🔧 PIWIS IV + PPN online
⚠️ Crash data must be cleared. All airbag components must be verified/replaced before coding will complete.
Door Control Unit Passenger (DCU-P)1.2 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Passenger door, lower section behind door panel
🔧 PIWIS IV
⚠️ Controls window, mirror, lock, and soft-close functions. Window initialization required after coding.
Adaptive Cruise Control Radar Control Unit (ACC)1.2 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Front bumper, center behind lower grille
🔧 PIWIS IV + PPN online
⚠️ Long-range radar for adaptive cruise and collision avoidance. Radar alignment required after replacement.
Porsche Connect Control Unit (PCU)1.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Rear parcel shelf area, left side behind trim
🔧 PIWIS IV + PPN online
⚠️ 5G modem expected on 2025+ models. Requires SIM activation and online subscription validation.
Park Assist Control Unit (PAU)0.8 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Rear luggage area, left side behind trim panel
🔧 PIWIS IV
⚠️ Controls ultrasonic parking sensors front and rear. Sensor calibration required after coding.
Front Camera Control Unit (FCU)0.8 hr R&Rsecurity gateway +0.5 hr▸ programming details
📍 Windshield, top center behind rearview mirror
🔧 PIWIS IV + PPN online
⚠️ Lane keeping, traffic sign recognition, and driver assistance. Windshield calibration required after replacement.
Keyless Entry and Start System Control Unit (KESSY)0.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Center console, integrated with start button assembly
🔧 PIWIS IV + PPN online
⚠️ All keys must be present for programming. Lost key requires online authorization and proof of ownership.
Seat Memory Control Unit Passenger (SMP)0.6 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Passenger seat, under seat base right side
🔧 PIWIS IV
⚠️ 14-way power adjustable passenger seat. Memory positions stored in module.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 25V896000
2025-12-19
Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cayenne, Cayenne E-Hybrid, 2020-2025 911, Taycan, 2024-2025 Panamera, and 2025 Panamera E-Hybrid vehicles. The rearview camera image may not display when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Consequence: A rearview image that does not display properly reduces the driver's view behind the vehicle, increasing the risk of a crash.
Remedy: Dealers will update the driver assistance software, free of charge. Owner notification letters were mailed February 13, 2026. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ASB2. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 19, 2026.
SUSPENSION:FRONT:MACPHERSON STRUT · 25V415000
2025-07-15
Porsche Cars North America, Inc. (Porsche) is recalling certain 2025 Panamera E-hybrid, Taycan, and Panamera vehicles. A retaining ring on top of the suspension strut may come loose, resulting in a dislodged strut and air loss from the strut spring.
Consequence: An air suspension strut failure may cause a loss of vehicle handling and control, increasing the risk of a crash.
Remedy: Dealers will inspect the retaining ring and reinstall it as necessary, free of charge. Owner notification letters were mailed August 15, 2025. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is ASA6.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 24V730000
2024-10-01
Porsche Cars North America, Inc. (Porsche) is recalling certain 2025 Taycan vehicles. The rearview image may not immediately display when the vehicle is shifted into reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence: A delayed rearview camera image reduces the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will update the central computer software, free of charge. Owner notification letters were mailed on December 23, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB8.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS · 24V455000
2024-06-19
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2025 Taycan vehicles. The front brake hoses can develop cracks and leak brake fluid.
Consequence: A brake fluid leak can reduce braking performance and extend the distance required to stop, increasing the risk of a crash.
Remedy: Dealers will replace the front brake hoses, free of charge. Owner notification letters were mailed on January 29, 2025. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB0.
Fuel economy (EPA)
City
80MPGe
Highway
78MPGe
Combined
79MPGe
Fuel
Electricity
Capability & size
EPA class
Compact Cars
Wiper blades
Sedan body style, no rear wiper. Both blades are same length on Taycan
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2025 Porsche Taycan Turbo S Electric and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.