Why do I hear a little crackling noise coming from under the hood after the car has been shut off?
just a hot engine after you shut it down,nothing to worry about,nothing is wrong.what you here is the exhaust.
The exhaust is cooling down. No worries, most cars do it.
Not just the exhaust, but also the engine in total and especially the manifold. When cooling down, the part that got hot, are "cracking" or rather giving you this "tic tic" sound. It's just metal cooling down.
Looking for a Used S-Class in your area?
CarGurus has 8,042 nationwide S-Class listings starting at $2,000.
Search Mercedes-Benz S-Class Questions
Mercedes-Benz S-Class Experts