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Fitment notes: 12V auxiliary battery; main traction battery separate; located in front trunk
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Every control module on the 2021-2026 Porsche Taycan Cross Turismo — 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.
Battery Management System Control Unit (BMS)8.5 hr R&Rsecurity gateway +2.0 hr▸ programming details
📍 Integrated into high-voltage battery pack, underbody center
🔧 Porsche PIWIS III + PPN online
⚠️ Requires battery pack removal for access; VIN-locked with cryptographic pairing; replacement typically requires complete battery pack replacement
Porsche Torque Vectoring Plus Control Unit (PTV+)5.0 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Rear axle, integrated with rear differential
🔧 Porsche PIWIS III + PPN online
⚠️ Electronic rear differential lock; requires differential oil service and system calibration after replacement
Transmission Control Unit (TCU)4.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Rear motor assembly, integrated with rear drive unit
🔧 Porsche PIWIS III + PPN online
⚠️ Controls 2-speed transmission on rear axle; requires high-voltage lockout and gear oil service during replacement
Electric Power Steering Control Unit (EPS)3.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Steering column, integrated with steering rack
🔧 Porsche PIWIS III + PPN online
⚠️ Rear-axle steering available; requires steering angle sensor calibration and alignment after replacement
Central Gateway Control Unit (CGW)3.2 hr R&Rsecurity gateway +2.5 hr▸ programming details
📍 Behind dashboard, center console area near steering column
🔧 Porsche PIWIS III + PPN online
⚠️ Security gateway enforces component protection; replacement requires dealer-level authentication and all module re-adaptation
Climate Control Unit (CCU)2.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Dashboard, center behind PCM screen
🔧 Porsche PIWIS III
⚠️ Heat pump system standard; requires refrigerant recovery and recharge during replacement
Power Electronics Control Module (PECM)2.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Front trunk, left side near motor inverter assembly
🔧 Porsche PIWIS III + PPN online
⚠️ Controls both front and rear motor inverters; requires high-voltage system lockout and discharge procedure before removal
Body Control Module (BCM)2.2 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Behind dashboard, left side near fuse panel
🔧 Porsche PIWIS III + PPN online
⚠️ Controls lighting, wipers, central locking; requires all convenience function adaptation after replacement
Surround View Camera Control Unit (SVC)2.0 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind PCM screen, center dashboard
🔧 Porsche PIWIS III
⚠️ Processes four camera inputs; requires camera calibration and alignment verification after replacement
Tailgate Control Unit (TCU)1.2 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Tailgate, left side near hinge
🔧 Porsche PIWIS III
⚠️ Power tailgate standard; requires position learning and pinch protection calibration after replacement
Park Assist Control Unit (PAU)1.2 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Rear trunk, right side near bumper
🔧 Porsche PIWIS III
⚠️ Integrates ultrasonic sensors and surround view cameras; requires sensor calibration after replacement
Door Control Unit (DCU)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Each door (four modules total)
🔧 Porsche PIWIS III
⚠️ Controls windows, mirrors, door locks per door; requires window initialization and mirror calibration
Porsche Dynamic Light System Plus Control Unit (PDLS+)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Each headlight assembly (left and right modules)
🔧 Porsche PIWIS III
⚠️ Matrix LED headlights; requires headlight aim calibration after replacement; sold as pair with headlight assembly
Seat Memory Control Unit (SMU)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Driver and passenger seat base (two modules)
🔧 Autel MaxiSys or PIWIS III
⚠️ Requires seat position initialization after replacement; comfort seats with memory function
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.
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 2026 Porsche Taycan Cross Turismo Electric and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.