Porsche Cayenne Turbo Speedometer Instrument Cluster 7L5920880A

For the Porsche Cayenne Turbo (955 chassis, 2003–2006), part number 7L5920880A refers to the high-specification Instrument Cluster (Speedometer).

Unlike the base Cayenne or Cayenne S, the Turbo version features a high-resolution Color LCD in the center and a boost pressure gauge, making it a distinct and more expensive component than its monochromatic counterparts.

1. Technical Specifications

• Application: Porsche Cayenne Turbo 4.5L V8 (955/9PA).

• Speedometer Unit: Typically features both MPH and km/h (depending on the market region).

• Display Type: Full Color Center Display (Matrix).

• Critical Features: Includes the integrated Turbo Boost Gauge and logic for the Air Suspension height display.

• Communication: Utilizes the early CAN-bus system (RB8 platform).

2. Common Failure Points

If you are looking for this part, it is likely due to one of these common “age-related” issues for the 955 generation:

• Center Display Failure: The color LCD often suffers from “dead pixels,” vertical lines, or complete fading when hot.

• Warning Buzzer Failure: The internal speaker that provides the “lights on” or “seatbelt” chime often dies. The speaker itself is often listed under the same part number family for repair kits.

• Backlighting: The fluorescent tubes or LEDs for the gauge faces can flicker or fail entirely.

3. Compatibility & Retrofitting

• Direct Fit: This part is a direct replacement for 2003–2006 Turbo models.

• Retrofitting to Cayenne S: It is a popular upgrade for Cayenne S owners who want the color screen. However, you will need a specialist with Porsche PIWIS or VAG-COM/VCDS to code the VIN and mileage.

• Immobilizer Warning: In the 955/957 generation, the immobilizer data is not stored in the cluster (unlike later 958 models), meaning a used cluster usually won’t prevent the car from starting, but it will cause a “Component Protection” or “VIN Mismatch” error without proper coding.