For many Audi enthusiasts in the US, it’s a perplexing omission: the Auto Hold feature. While commonplace in mid-range vehicles from Honda, Subaru, and Toyota, Audi USA inexplicably leaves it out of many models. Speculation points to potential unintended acceleration lawsuit concerns, but the exact reason remains unclear. However, after experiencing the convenience of Auto Hold in another vehicle and hearing rave reviews emphasizing that “you just have to try it to appreciate it,” I decided to take matters into my own hands and perform a DIY installation.
Let me cut to the chase: I am absolutely thrilled with the Auto Hold feature and now use it daily. The freedom it provides at long traffic lights and in drive-throughs, allowing you to relax your legs, is simply invaluable. If you possess even moderate technical skills, I wholeheartedly recommend this upgrade.
To bring this feature to my Audi, I opted for the Kufatec Auto Hold kit (https://kufatec.com/en/complete-kit-…-a5-f5/42105-m). This comprehensive kit included everything necessary for the retrofit:
- 1 x Wiring loom with 4 wires
- 1 x Auto Hold switch
- 1 x Pre-loaded coding dongle
Following my purchase, I accessed the Kufatec website and downloaded the detailed, approximately 20-page installation instructions using my order number. While not flawless, the instructions, combined with helpful pictures and descriptions, provided a clear path to successful installation.
Gathering Your Tools and Preparing for Installation
To undertake this project, you’ll need a selection of Torx bits and plastic prying tools. Additionally, one wire in the kit requires splicing into a wire on one of the vehicle’s main wiring harnesses. For this, I used solderless wire connectors (https://www.amazon.com/OIIKI-Connect…08GPZ2F4V?th=1), which simplified the process considerably.
To supplement the Kufatec instructions, I found a video tutorial particularly useful. This visual guide, used in conjunction with the written instructions, proved invaluable in navigating certain steps. A word of caution: exercise extreme care when prying off the console around the gear shifter, as the plastic tabs are somewhat fragile and can break easily if forced.
Before disconnecting any wires, meticulously label each one. This step is crucial for a smooth reassembly process. Once the main wiring harnesses are exposed, connecting the new wires becomes remarkably straightforward. Simply locate the corresponding number for each wire in the instructions and clip or lock it into the designated position. Remember, only one wire requires splicing.
When removing the door plastic trim, proceed slowly and methodically, adhering to the order demonstrated in the video tutorial. On my 2019 S4, I encountered a couple of hidden screws that were not explicitly shown in the video, so be prepared to explore and identify any additional fasteners specific to your model.
Reassembly, Coding, and the Moment of Truth
With all wires correctly connected, begin carefully reassembling the interior components in the reverse order of disassembly. Once everything is back in place, it’s time for the coding phase using the provided dongle. The instructions were simple: insert the dongle into the OBD2 port. The dongle blinked for only a few seconds before turning off, much quicker than the 30 seconds indicated in the guide. This brevity initially made me apprehensive about whether the coding had been successful.
Following the instructions, I powered down the car completely and moved the key fob out of range for about 10 minutes. Returning to the car, the moment of truth arrived at the first stop sign. As I pressed the brake pedal, a green “Park” symbol illuminated on the dash, and the car held firmly in place! It was an incredibly satisfying moment, confirming the successful installation and activation of Auto Hold.
Daily Driving with Auto Hold: A Seamless and OEM-Like Experience
One of the most appealing aspects of this retrofit is the feature’s intelligent engagement. Auto Hold doesn’t activate every single time you press the brake pedal. There’s a distinct “sweet spot” in brake pedal pressure. For gentle braking and rolling stops, Auto Hold remains disengaged. It only activates when you apply slightly firmer pressure to the brake pedal, providing intuitive control over the system.
Furthermore, the installed Auto Hold button seamlessly integrates into the existing interior, appearing completely OEM and matching the brightness of the electronic parking brake button. It’s a clean and factory-like addition that enhances both functionality and aesthetics, effectively eliminating what felt like a missing feature.
Final Recommendation
In conclusion, installing Auto Hold in my Audi has been an overwhelmingly positive experience. The added convenience and comfort in daily driving are undeniable. If you are comfortable with DIY car modifications and can dedicate 3-4 hours, perhaps on a weekend, to this project, I wholeheartedly recommend this upgrade. It’s a relatively straightforward process that unlocks a hidden feature and significantly enhances the driving experience of your Audi.
Let me know if you have any questions or share your own experiences with Auto Hold retrofits!
