I have a 2015 K1600GT that did not come with Hill Start. I had it added August 3, 2018, and in October, 2018, the Hill Start would hold sometimes, and other times it would release after 2 to 3 seconds. I thought it was due to the battery being depleted, since it was the original battery. On October 28, 2018 I took the bike to the BMW Dealership and had the software updated.
On Sunday, March 31, 2019, we took an 8 hour ride to the Mackinac Bridge in Michigan and back home. The temperature was between 23 and 30 degrees, so I had heated gear (gloves, jacket liner, pants liner, and insoles) plugged in. The Hill Start failed to hold the bike longer than 3 seconds 50% of the time. I thought it was due to the drain on the battery.
On Saturday, April 6, 2019, I took the bike to a BMW dealership, and had the battery replaced, and they performed a software update. Today, April 9, 2019, I was riding without any heated gear, nor did I have the heated seat or handgrips on, and the Hill Start malfunctioned. It held the bike about 70% of the time I activated it, but about 30% of the time, it would automatically release after 2 to 3 seconds. The bike has 60,000 miles, and of course, it's no longer covered under the warranty. Also, I had the front and rear brake fluid flushed.
Last edited by rkwms; 04-09-2019 at 11:00 PM.