Mercedes benz ml320 1998 clicking sound near control panel when I turn on the start key half way before start the engine and continue witn the engin on.
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If you hear a click while turning the key this would indicate low charge in battery any reading under 12 on a tester would have trouble starting other than that loose battery leads have you tried jumping if it starts with a jump this would indicate battery.
Does it click or do anything? If not, then the plastic gears inside the ignition that control the vehicles ACC and ON positions along with the cranking may have slipped. Have someone to pull the ignition switch panel and check and make sure the "gears" are working properly.
sounds like a bad vaccum line at the key barrel... the old mercedes had vaccum accuated key barrels and with no vaccum the engine would stay running... check for the lines near the key hole and follow them and inspect as you go.
if the sound is like a click noise then it may be the solonoid on starter. if this fails it will not turn engine over. it just wont engage flywheel. if need be have it checked to see if the starter and or solonoid are bad.
Check your fuel pump pressure. You can rent a fuel pressure gauge from autozone and check pressure coming from supply pump. I bet its weak. Hope this helps.
IT SOUNDS DUMB BUT YOU SHOULD HAVE TWO KEYS, IF YOU DO TRY WITH THE OTHER KEY. IF NOT BUY A SPARE KEY THEY TEND TO STOP COMMUNICATING WITH THE ENGINE CONTROL MODULE AND WONT START
Hi, Joe here
The problem sounds like a faulty crankshaft position sensor. The sensor is located on the transmission bell housing on the left side. Can be accessed threw the top of the engine near the firewall.
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