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			#1  
			
			
			
			
			
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			while driving my 1980 300 SD with the climate control system on I reached up and pushed the "off" button and right then I heard a muffled "pop" noise sounded like from between the front seats under the car, then when I got home and tried to lock the car the doors locks wouldn't operate and key wouldn't turn
			
				
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			#2  
			
			
			
			
			
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			It sounds as if you blew a fuse.  I can't believe it was that loud though.  I think this will have to be looked at by a tech. ------------------ Benzmac: 1981 280GE SWB 1987 16V ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM | 
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			#3  
			
			
			
			
			
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| quote: I found the problem....I only recently purchased this vehicle and am still trying to get used to the keys/locks....I had been pushing the key into the lock too far and it wasn't keying properly....as for the noise, it must have been something else....the locks work fine..... | 
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