Purchased a 2000 ML320 from the auction about 6 months ago. Have replaced quite a bit of stuff that has popped up with issues - radiator, front end suspension, radiator fan, brake caliper. Now went outside this morning and the car won’t crank or start. Was working fine last night. Any ideas?

 

Everything starts with the battery. If you disconnected it while doing these repairs, make sure the terminal clamps are secure.