Porsche Taycan J1

The optional 22 kW AC on-board charger uses STMicroelectronics 40N120AG MOSFETs in its Power Factor Correction circuit that are prone to burning out. When this occurs, AC charging stops working entirely, displaying an 'Electrical System Fault' warning. The part is expensive (€1,500-3,500 depending on availability and labor) and backordered at times. The standard 11 kW charger is significantly more reliable. Some specialists have repaired the unit by replacing the failed MOSFET with a higher-rated Nexperia component, but this requires cutting open the sealed unit. Porsche does not sell the charger as a repairable assembly. Cars equipped only with the standard 11 kW charger are largely unaffected by this issue.

The most common owner complaint across all Taycan variants. The 12V battery powers all control systems and if it dies, the car becomes completely unresponsive even with a full high-voltage battery. Typical failure occurs between 2-5 years of ownership. The 2020 model year was particularly affected due to a supplier issue. Later models improved but the fundamental draw of 40-80 mA when parked remains. If the car sits for 10-14 days without driving, especially in cold weather, the 12V battery can drain completely. Replacement costs €250-500 at a Porsche dealer. Prevention: use a compatible trickle charger if the car sits for extended periods.

Porsche recalled 2020-2024 Taycan models due to potential internal short circuits within the battery modules that could create a fire risk. The remedy involves diagnostic software deployment and, where necessary, module or pack replacement. This is fully covered under the recall campaign. Until repaired, Porsche recommends charging only to 80%. Verify with Porsche using the VIN whether this recall applies and has been completed. The recall affects a subset of vehicles; not all Taycans require physical module replacement.

The Porsche Communication Management system can freeze, reboot randomly, or lose connectivity with Apple CarPlay and Android Auto. Some owners report the rear camera image not appearing when reversing, which has been addressed under a separate recall for 2019-2025 models. Most issues are resolved with over-the-air updates or a dealer software reflash (€150-350 if out of warranty). In rare cases, the PCM module itself needs replacement (€1,200-1,500). Early model years (2020-2021) were more prone to these issues; later software versions have improved stability significantly.

Taycans optionally equipped with adaptive air suspension can develop strut leaks, compressor issues, or sensor calibration drift. Symptoms include uneven ride height, 'Chassis error' warnings, or the system refusing to change between comfort and sport modes. Many cases are software-related and resolved with a recalibration, but physical strut replacement costs €700-1,500 per corner. A 2022 recall (ANB8) addressed a manufacturing defect with retaining rings on certain 2021 models (28 cars affected). Cars without the air suspension option use standard steel springs and are not affected by this issue.

The motorized charging port doors can stick open or closed due to faulty position sensors, worn actuators, or software glitches. Porsche issued TSB 186/24 and workshop campaign WLK2 addressing wiring and actuator issues. The Taycan has a cross-lock safety feature where a fault on one side may display an error for the opposite side. If the door is stuck closed, the car cannot be charged. Temporary fix: lock the car and move the key fob away for 15-20 minutes to allow a system reset. Permanent repair involves actuator or wiring replacement at €300-800.

A widely reported design characteristic rather than a defect. When the Taycan's ride height drops (particularly in Eco/Range mode), rear camber increases beyond specification, causing accelerated inner shoulder wear on the rear tires. Forum reports show tires worn to cords on the inner edge while the rest of the tread appears adequate. The camber is not adjustable on the Taycan. Workarounds include avoiding the lowered driving mode for daily use and rotating tires frequently. Rear tires may need replacement every 20,000-30,000 km versus the expected 35,000-45,000 km, adding €500-1,000 in additional tire costs over a 5-year ownership period.