Hello everyone, I have a 2004 SL55 with 81k on it. Extremely well maintained All work done by dealership. I just bought it off my brother inlaw. It’s been sitting in the garage and I’ll start it every other day for 10 min. Take her out once a week around the subdivision for about 4 miles. Then park it. So far 2 times it has just shut off on me while idle in the garage now it just cranks and no starts. Anyone have this issue? Any ideas? Or am I visiting the dealership. I’m very mechanically incline. So any ideas would help. Thanks.

UPDATE. I Let it sit for about a hour. Then it fired rite up. Then after 3 min it shut down again and won’t start. It’s about 20 degrees here.