2000 mercedes s500 ac problem

on the end of the dash ,open the door and its their

It looks like this should help:

Where is the relay for airmatic suspention pump on 2000 Mercedes S500

If pulling that out and putting it back in doesn't help, here's some more troubleshooting info:

2000 S500 airmatic problem Mercedes Forum Mercedes Benz Enthusiast Forums

does the front bumper need to come off in order to replace head light assembly on 2003 s500?

check all fuses/breakers in cabin & engine fuse boxes

possibly faulty airmatic compressor witch is located under the front right bulkhead, It could do short circuit that could be the reason battery get damaged because of it getting high amps all the time when it's working it can harm to battery check airmatic compressor now it should be dead,

If you have a owners manual then the method is described there.

Your compressor clutch is not engaged that was why AC is not on. The clutch is controlled by several sensors: coolant temp, refrigerant pressure, compressor speed sensor, evaporator temp sensor... First to make sure your Clutch is working then start tracing back to these other sensors. Look at the compressor, there is a plug of electrical wire on it. One prong is for speed sensor feedback, the others are for power connectors to turn on the clutch. Jump wires to power to clutch to check if it is working. That is just the beginning of AC troubleshooting. Good luck.

If you have the hood up stand outside while someone activates your air off and on and see if the clutch on the compressor goes on and off while they activate the switch. If that isn't it the it could be improperly charged system or your climate control door that opens and closes for hot or air is not working properly and only stays on heat.

hello,good day,yes your may check the power supply and contact,if not corrected,send your car to a dealer for proper diagnose,maybe erase fault or configuration of your system is needed,to correct the problem,ty

Hello
Probably short on AC gas , as if law on AC gas the compressor would not work as a compressor protection mode. Check if AC gas is low and pressure test for leaks