IsItAGoodCar

Common Problems with the
2018–2022 Porsche Cayenne (9Y0)

We've identified 3 known issues that can affect the 2018–2022 Porsche Cayenne (9Y0). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
0
Moderate
2
Minor

The 2018–2022 period has 2 more issues than the Porsche Cayenne (9Y0) average across all year periods.

All Known Issues

12V Lithium Battery Failure

SeriousElectrics & Electronics

The proprietary 12V Li-ion starter battery can fail if the car is left sitting, and is very costly to replace.

Most affected: All models (especially E-Hybrid)

Estimated cost: £1,500–£2,500Affects: 2018–2022Often appears around: N/A

Typical symptoms

  • •Total power loss
  • •Dash warnings "Electrical system error"

What to inspect before you buy

  • ✓Verify battery health or recent replacement

PCM Infotainment Freezes

MinorElectrics & Electronics

The PCM system can suffer from screen freezes, slow response, and software glitches requiring dealer updates.

Most affected: All models

Estimated cost: £0–£200 (Software update)Affects: 2018–2024Often appears around: N/A

Typical symptoms

  • •Screen freeze
  • •Slow system response
  • •Navigation glitches

What to inspect before you buy

  • ✓Ensure latest software updates are applied
  • ✓Test all infotainment functions

Active Grille Shutter Failure

MinorCooling System

The active grille shutters can seize from road debris, causing warning lights and reduced cooling efficiency.

Most affected: All models

Estimated cost: £300–£600Affects: 2018–2024Often appears around: 30k-60k miles

Typical symptoms

  • •Grille shutter warning
  • •Reduced cooling performance

What to inspect before you buy

  • ✓Check for grille shutter warning lights
  • ✓Inspect shutters for debris damage

Buying Tips for the 2018 Porsche Cayenne (9Y0)

  • ✓Check the PCM for freezes; software updates are common and necessary.
  • ✓If buying an E-Hybrid, check the 12V Lithium battery health; replacements are extremely expensive.
  • ✓Test the active grille shutters; they can seize from road debris.
2023–2024 Porsche Cayenne (9Y0)

Browse 2018–2022 Porsche Cayenne (9Y0) in our Directory

View MOT history, registration data, and reliability scores for 2018–2022 Porsche Cayenne (9Y0) vehicles.

View 2018–2022 Directory

Other Porsche Cayenne (9Y0) Year Periods

2018–20222023–20242025

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