I had a really specific problem with my 2018 S4 where the transmission would occasionally refuse to shift into reverse unless I restarted the car. Very intermittent, no pattern, drove me crazy for months. I took it to three different general repair shops and none of them could figure it out. Finally found a workshop in Sharjah that has a Dedicated Transmission Specialist Sharjah who literally only works on Audi and Volkswagen dual clutch transmissions. His entire bay is just DSG parts, tooling, and service manuals. He diagnosed the issue as a failing reverse gear position sensor that was intermittent when hot. He replaced just that sensor and recalibrated everything. Total cost was under 1000 and the problem hasn't come back in two months. It's so refreshing to deal with someone who has such deep specific knowledge. I've learned my lesson – for transmission work, go to a transmission specialist, not a general mechanic. Anyone else had a similar experience where specialization made all the difference?
