Adding Park Assist to your BMW can significantly enhance your parking experience. This comprehensive guide outlines the process of retrofitting Park Assist, providing detailed instructions and insights for a successful installation. While factory-ordering this option is possible, retrofitting can be a cost-effective alternative, costing roughly $500-$550 if you find good deals on parts.
Prerequisites for Park Assist Retrofit
Before embarking on this retrofit, ensure your BMW meets the following requirements:
- Park Distance Control (PDC): Both front and rear PDC (Option 508) are mandatory. This system utilizes ultrasonic sensors to measure distances to obstacles. Whether factory-installed or retrofitted doesn’t matter.
- Rear View Camera (RVC): Option 3AG, the Rear View Camera, is also essential for Park Assist to function correctly. This provides a visual aid during parking maneuvers.
- Coding Knowledge and Tools: This retrofit requires VO coding. You’ll need a computer, an ENET cable, and familiarity with E-Sys coding software. Experience with Rheingold diagnostic software is also recommended.
Parts Required for Park Assist Retrofit
The following parts are typically required for retrofitting Park Assist on a US F30 sedan. Always confirm part numbers for your specific BMW model using RealOEM or ETK before purchasing. Part numbers may vary based on your vehicle’s year, model, and region.
- DSC Pulse Generators (Front): Qty. 2 (34526791224). These are only required if your car doesn’t already have Active Cruise Control with Stop & Go (Option 5DF) or if you have an M3.
- Park Assist Module (PMA): (66336851822 / 66336857208 / 66336860827 / 66336864898). Several compatible part numbers exist.
- Ultrasonic Park Assist Sensors: Qty. 2. These sensors differ from standard PDC sensors. The correct part number depends on your car’s paint color (refer to RealOEM).
- Decoupling Rings: Qty. 2 (66206923000). These rings help isolate the sensors from vibrations.
- Brackets for Park Assist Sensors: Included in (51117324343). If you have Surround View (Option 5DL) or retrofitted front PDC, you likely already have these.
- Sensor Wiring Components: 3-pin connectors (61136925599), socket contacts with grommets (61130005199), and BMW OEM quick connects (61138364566).
- PMA Wiring Components: Socket contacts (61130005197), 18-pin socket housings (61138364666), and covering caps (61138364662).
Installation Process: Retrofit Park Assist
The retrofitting process involves several steps, from preparing the vehicle to coding the new module.
Preparation: Disconnect the negative battery terminal, remove the front bumper, and relevant interior trim pieces for access to wiring harnesses and installation locations. Prepare wiring harnesses for the PMA module and front sensors. Modify the covering caps for the PMA module connectors.
PMA Module Installation: Install the PMA module in its designated bracket in the trunk.
DSC Pulse Generator Replacement (If Necessary): Replace the front DSC pulse generators if your vehicle requires them.
Front Sensor Installation: Carefully drill holes in the front bumper according to the pre-marked locations (or existing Surround View bracket locations). Install the Park Assist sensors and brackets using adhesive. Connect the sensor wiring to the front PDC harness, extending two signal wires to the rear of the vehicle for the PMA module.
PMA Module Wiring: Connect power and ground wires to the PMA module, tapping into the rear fuse block and a grounding point in the trunk. Connect the extended sensor signal wires to the PMA module connector. Relocate necessary PDC wires from the REM module to the PMA module connectors, ensuring correct pin assignments.
Coding: Reconnect the battery. Use E-Sys to add the 5DP option to your vehicle’s FA (Vehicle Order). Create a CAFD (Calibration File) for the PMA module, matching your car’s I-Step level. VO Code the updated FA to the relevant modules, including DSC, REM, HU_CIC/NBT, TRSVC, ICM, and PMA.
Reassembly and Testing: Reassemble all removed trim pieces and the front bumper. Test the Park Assist system by activating it via the PDC button and following the on-screen instructions. Practice in a safe, open area to familiarize yourself with the system’s operation.
Conclusion
Successfully retrofitting Park Assist adds a valuable feature to your BMW. This upgrade enhances parking convenience and safety. Remember to consult your vehicle’s specific documentation and exercise caution throughout the installation process. With careful planning and execution, you can enjoy the benefits of this advanced driver-assistance system. While the system can be helpful, remember that you are still responsible for controlling the vehicle’s braking and acceleration and maintaining awareness of your surroundings.
