Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram
Porsche specialists based in the UK
Porsche > 997 (911) MK1 2005-2008 > 997 MK1 GT2 2007-09 > Electrical & Relays >

Electronic Control Units

Electronic Control Units

DISPLAYING 1 to 6 (of 6 products)
Control unit / cooling air control. Porsche 997 GT2 / GT3 - 99761843693, 99761843692
2
Control unit / cooling air control. Porsche 997 GT2 / GT3
Special Order item
99761843693
Product Information
Product Information
Control unit / cooling air control.

porsche

Fits:
Porsche 997 GT3 / GT3RS / GT2 / GT2RS

Click 'Zoom in' for large parts diagram.
Diagram ref no 26

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761843693
99761843693
99761843692

The product you are viewing cross references to these numbers
Control Unit For Four-Wheel Drive. Porsche 997.1 Turbo / GT2 2007-09 - 99761819504, 99761819502, 99761819503
3
Control Unit For Four-Wheel Drive. Porsche 997.1 Turbo / GT2 2007-09
Special Order item
99761819504
Product Information
Product Information
Control Unit For Four-Wheel Drive.
Ensure your Porsche 911 (997 generation Turbo / GT2 all-wheel-drive models) maintains its factory-spec AWD performance with this genuine OEM control module. This module governs the transfer case and AWD logic, managing front/rear torque distribution, sensor input and system actuation to deliver Porsche’s intended driving dynamics and safety.

Fits:
  • Porsche 997 MK1 TURBO 2007-09
  • Porsche 997 MK1 GT2 2007-09

Diagram Ref No 7

What This Product Does:

  • This control unit monitors sensors (such as speed sensors, yaw, wheel slip) and drives actuators in the transfer case/all-wheel-drive system to engage/disengage or regulate power to the front axle, manage slip conditions, and ensure the AWD system works correctly under various driving conditions.
  • It ensures the system behaves safely and according to Porsche’s tuning — when you accelerate, brake, corner or change surface grip, the module governs how the front/rear torque split is controlled, reducing slip, enhancing stability and performance.
  • Without a properly functioning module, the mechanical AWD system cannot respond correctly to driver input or sensor feedback, which may lead to reduced performance, warning lights, or even drive-mode lock-out.

Symptoms & Signs Of A Faulty Module:
  • The AWD/4WD warning light or malfunction indicator on the dash related to drive-system faults.
  • The vehicle’s front axle or AWD system not engaging (or engaging incorrectly) — e.g., rear-wheel drive only when there should be full-time AWD, or unusual behaviour when cornering.
  • Erratic behaviour from the AWD system: slipping, traction control light, inconsistent grip, or possible front-drive disengagement.
  • Fault codes logged in the vehicle’s diagnostic system referencing the module part number or transfer case sensor/actuator circuits.
  • Especially following replacement of differential, transfer case or front driveshaft components — if the module was disturbed, removed or failed, replacing it may restore proper operation.

Why Replacement Matters:
  • System integrity: The AWD system is a core performance and safety component on Porsche 911 Turbo/GT2 models. A faulty module compromises stability, traction and the intended driving dynamics.
  • Avoids further damage: If the module fails and the AWD system operates incorrectly (or remains locked/unlocked), mechanical parts (transfer case, driveshafts, clutches) may be overstressed or damaged over time.
  • Simplified installation: A genuine module means plug-and-play compatibility, less risk of coding issues, fewer diagnostic headaches, and quicker return to correct AWD functionality.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761819504
99761819504
99761819502
99761819503

The product you are viewing cross references to these numbers
Control Unit For Ignition Starter Switch. Porsche 987 Boxster / 987 Cayman / 997 - 99761815904, 99761815905, 99761815906, 99761815907, 99761815900, 99761815901, 99761815903
6
Control Unit For Ignition Starter Switch. Porsche 987 Boxster / 987 Cayman / 997
Special Order item
99761815907
Product Information
Product Information
Control Unit For Ignition Starter Switch.

porsche

Fits:
Porsche 987 Boxster 2005>>
Porsche 987 Cayman 2006>>
Porsche 997 MKI & MKII 2005>>
Porsche 997 Turbo/GT2 2007>>
Porsche 997 GT3 2007-11

This product supersedes Porsche's old part numbers:
- 99761815904
- 99761815905


Click 'Zoom in' for large parts diagram.
Diagram ref no 1.

Looking for a reliable replacement ignition switch for your Porsche 997? The Porsche ignition switch (part no. 997 618 159 07) is a genuine OEM part, designed to restore smooth starting and electrical function to your vehicle. Key Features of Porsche Ignition Switch 99761815907 

No Programming Required: This ignition switch is plug-and-play. Simply install and use with your existing key and immobilizer system. 

OEM Quality: Genuine Porsche part ensures perfect fitment, durability, and long-term reliability. Common Fault Fix: Replaces a worn or faulty ignition switch that may cause starting issues, electrical glitches, or accessories failing to power up. 

Updated Design: Supersedes earlier part numbers (such as 99761815900 / 99761815901 / 99761815902) with the latest Porsche-approved version. Vehicle Compatibility The Porsche ignition switch 99761815907 is compatible with: Porsche 911 (997 Carrera, Carrera S, Carrera 4, Turbo, GT2 – various years) Porsche Boxster 987 Porsche Cayman 987 (Always confirm compatibility with your vehicle’s VIN before ordering.) 

Why Choose a Genuine Porsche Ignition Switch? Unlike cheap aftermarket alternatives, this OEM ignition switch guarantees correct operation with your Porsche’s electrical and immobilizer system. No coding or reprogramming is required – install it and your car will start and run normally with your original keys.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761815907
99761815904
99761815905
99761815906
99761815907
99761815900
99761815901
99761815903

The product you are viewing cross references to these numbers
Control unit for steering column. Porsche 997 / 987 Boxster / 987 Cayman - 99761815804, 99761815803
9
Control unit for steering column. Porsche 997 / 987 Boxster / 987 Cayman
Special Order item
99761815804
Product Information
Product Information
Control unit for steering column.

porsche

Fits:
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12

Click 'Zoom in' for large parts diagram.
Diagram ref no 3



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761815804
99761815804
99761815803

The product you are viewing cross references to these numbers
Control Unit Rear Spoiler. Porsche Boxster / Cayman / 997 - 99761826004, 99761826008, 99761826006
3
Control Unit Rear Spoiler. Porsche Boxster / Cayman / 997
Special Order item
99761826008
Product Information
Product Information
Control Unit Rear Spoiler.

porsche

Fits:
Porsche 987 Boxster MKI 2005-08
Porsche 987 Boxster MKII 2009>>
Porsche 987C Cayman MKI 2005-08
Porsche 987C Cayman MKII 2009>>
Porsche 997 Carrera MKI & MKII
Porsche 997 Turbo / GT2 / GT3

Covers parts No's 99761826004 & 99761826006

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761826008
99761826004
99761826008
99761826006

The product you are viewing cross references to these numbers
Sensor for interior monitoring. Porsche 997 / 987 Boxster / 987C Cayman - 99761821001
4
Sensor for interior monitoring. Porsche 997 / 987 Boxster / 987C Cayman
Special Order item
99761821001
Product Information
Product Information
Sensor for interior monitoring.

porsche

Fits:
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Porsche 987 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C Cayman 2005-08
Porsche 987C.2 Cayman 2009-12

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99761821001
99761821001

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 products)
Also found on these pages
About Electronic Control Units

Electronic Control Units (ECUs) – Precision Performance and Reliability for Porsche Vehicles

Electronic Control Units (ECUs) are the brains of your Porsche’s electronic systems, managing and monitoring everything from engine performance to fuel delivery, ignition timing, transmission response, and emissions control. These highly sophisticated modules communicate with multiple sensors and actuators to ensure your car runs efficiently, safely, and smoothly under all driving conditions.

At Design911, we supply a wide range of genuine and high quality ECUs for Porsche models - including engine control units, transmission control modules, body control units, and more. Each ECU is manufactured to the highest standards, ensuring exact compatibility and seamless communication with your vehicle’s electronic architecture.

What Do Electronic Control Units Do?

An ECU acts as the central processor of a vehicle’s system, interpreting data from sensors and adjusting performance parameters in real-time. Depending on the application, ECUs can control:

  • Engine management: fuel injection, ignition timing, turbo boost, and air-fuel ratios.
  • Transmission systems: shift points, torque converter lock-up, and gear selection.
  • ABS and traction control: maintaining grip and stability.
  • Body systems: lighting, climate control, and interior functions.

Modern Porsche vehicles often contain multiple ECUs working together across a CAN bus network, ensuring optimal efficiency, emissions compliance, and driver comfort.

Why Do ECUs Fail?
Electronic Control Units are robust, but can fail due to age, environmental factors, or electrical faults. Common causes include:

  • Water ingress or corrosion: damaging internal circuits.
  • Voltage spikes or short circuits: caused by battery or alternator issues.
  • Thermal stress: from prolonged engine heat cycles.
  • Software corruption or data errors: due to low voltage or improper programming.
  • Connector and harness faults: causing poor communication with sensors.

Symptoms of ECU failure may include engine misfires, warning lights, poor performance, stalling, or failure to start.

Why replace your ECU?
A faulty ECU can cause unpredictable performance, poor fuel economy, and safety concerns. Replacing a malfunctioning unit restores the precision and reliability your Porsche was built to deliver.

Benefits of replacing with a quality ECU include:

  • Full compatibility with vehicle systems.
  • Restored factory performance and efficiency.
  • Elimination of warning lights and diagnostic faults.
  • Improved reliability and drivability.

You may also like
Popular Models