The Bmw Kafas2 camera system offers significant safety and driver assistance features, including Lane Departure Warning, Speed Limit Info, and High Beam Assist. Retrofitting KAFAS2 to a BMW F3x can significantly enhance its capabilities. This guide outlines the requirements, necessary parts, and installation process for a successful KAFAS2 retrofit.
Prerequisites for KAFAS2 Retrofit
A successful KAFAS2 retrofit requires specific components already present in your vehicle:
- Speedometer: Your BMW should have either the 6WA or 6WB speedometer.
- Navigation System: A Navigation System Professional (CIC/NBT) or Business EntryNav is essential. A Head-Up Display (HUD) is beneficial but not mandatory.
- Model Year: The model year is generally not a limiting factor as long as the above requirements are met. Vehicles previously equipped with High Beam Assist (HBA) will benefit from the superior performance of the KAFAS2 color camera compared to the older HBA system.
Important Note: Working with airbag systems and vehicle electronics requires specialized knowledge. This guide is for informational purposes only. Incorrect installation can cause damage. Proceed with caution and consult a professional if needed. Always disconnect the battery before working on airbag-related components or electrical systems.
Required Parts for KAFAS2 Retrofit
Gathering the correct parts is crucial. Here’s a comprehensive list:
- Windshield: Choose the correct windshield with KAFAS2 compatibility for your F3x model, with or without HUD. Refer to the original article for specific part numbers.
- Interior Mirror: Select the appropriate mirror based on your vehicle’s specifications (e.g., dimming, alarm).
- Interior Mirror Covers: Part number 9 275 008.
- KAFAS2 Camera: Crucially, 3 Series and 4 Series use different cameras due to varying windshield angles. Refer to the original article for specific part numbers for your model.
- KAFAS2 ECU: Various part numbers exist due to different I-steps. The original article lists compatible ECUs.
- ECU Holder: Part number 9 232 796.
- Metal Screw: Part number 9 158 177.
- Wiring Harness: Utilize the KAFAS wiring harness from an X5 F15 (part number 9 322 256) due to similarities with the F3x.
- Additional Connectors: You’ll also need a double flat spring contact, a ring eye M6 (or ground support pin), and two MQS pins without ELA for Speed Limit Info (SLI) functionality.
KAFAS2 Retrofit Installation Steps
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Preparation: Disconnect the battery. Ideally, the new windshield should be installed before starting. Remove the A-pillar trim, footwell trim, and glove box. If necessary, remove the head unit and TRSVC ECU (for vehicles with rearview or surround view cameras).
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Camera Installation: Install the KAFAS2 camera in its designated mount on the windshield. Connect the F15 wiring harness to the camera and the 3-pin MQS plug to the windshield for camera heating.
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Wiring: Carefully route the wiring harness through the headliner, down the A-pillar, and into the driver’s footwell. Ensure the wiring does not interfere with the head airbag deployment.
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ECU Installation: Mount the KAFAS2 ECU holder and secure the ECU. Connect the wiring harness to the ECU, paying attention to the specific pin configuration described in the original article regarding pins 9 and 10 on connector A56*1B. Connect the remaining wires: green to fuse F44 in the front fuse box, brown to ground, and red/blue-red to the PT-CAN bus.
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PT-CAN Connection: Connect to the PT-CAN bus via the ACSM ECU. The recommended method is to directly connect to pins 52 and 26 on connector A11*1B using MQS pins and a specialized BMW gripper. Avoid splicing wires into the ACSM harness if possible.
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Reassembly: Reinstall all removed trim pieces.
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Software: Flash the KAFAS2 ECU to the appropriate vehicle I-step and load the necessary FSC codes. Add 8TH to the vehicle order (FA) and code the entire car.
Conclusion
Retrofitting BMW KAFAS2 is a complex process that adds valuable driver assistance features. This guide provides a detailed overview, but professional assistance is recommended for those lacking experience with automotive electronics. Ensure all parts are compatible with your specific BMW model and exercise caution throughout the installation. Enjoy the enhanced safety and convenience of KAFAS2!
