I'm really annoyed right now. I bought a new battery for my 2018 E350 from a general auto shop about 18 months ago, and this morning the car wouldn't start again. Slow crank, click click click, and then nothing. I had to take my wife's car to work and now I'm sitting here wondering where I went wrong. I remember when I got the battery replaced last time, the guy at the shop said something about Mercedes needing the battery to be "registered" to the car's computer, but he said it wasn't necessary and just swapped it out. Now I'm thinking maybe that's why this battery didn't last as long as it should have. I live near the Musaffah area and I've seen a few workshops around there that work on European cars, but I'm not sure which ones actually know what they're doing with the coding and registration stuff. I definitely don't want to go back to the same place that didn't register it properly. I'm looking for Professional battery maintenance for Mercedes Benz vehicles in Musaffah Gardens because I figure if they specialize in Mercedes they'll know about the battery registration process and have the proper diagnostic tools. Has anyone here had their Mercedes battery replaced at a shop in Musaffah that did the registration properly? I'd rather not go to the dealership and pay their premium prices, but I also don't want to end up with another dead battery in a year and a half. I've also heard that these cars need an AGM battery specifically because of the stop-start system, and I'm starting to wonder if the previous shop put the wrong type of battery in as well. Would appreciate any recommendations from people who've been through this.