I washed my 2003 Benz engine and the plugs are wet, what do I do?

Battery is defective if clicking is solenoid for starter trying to engage the starter. Did you get water under the hood, could also be wet ignition coil or distributor. Did you disconnect anything while getting at spark plugs like a wire to ignition?

most likely there was a bare wire somewhere and when you got it wet it shorted your main comp. try removing then plugging in an hour or so later and see what happens

Got spark plugs end wires wet,

Could be two different problems.
The ignition system could be shorting out and shut the engine off when wet, and the serpentine belt could be slipping when wet which would cause the alternator not to charge.
The battery light should come on if the engine dies.

typically water gets in the radiator cap area always trouble shoot fuel and spark.

dodgy injector or wiring

Need to check if you have spark. Remove one spark plug after cranking to see if it is dry or wet. If it is dry then there is no fuel. Problem is with the fuel pump relay. If it is wet then there is not spark or weak. To confirm, have the spark plug holding against the engine chasis to have ground then have a helper to start the engine, if there is no spark, then need to check the coil. The engine is only igniting when it has spark and fuel. Good Luck.

CHECK AC COMPRESSOR FUSE AND RELAY. IF ALL IS GOOD WATER GOT IN COMPRESSOR CLUTCH COIL.SHORT IT OUT. OR COMPRESSOR BELT IS SLIPPING BECAUSE ITS WET.

one of the engine sensors must be having a problem! have the vehicle diagonised! use a scan tool please

hi,seem all the clarification request are better,pls, install a new spare plug,try to start your engine,if not,remove your spare plug,now you can decide fuel supply or ignition system is missing,if plug is wet,ignition must check,if not wet fuel pressure must look,ty