Clicking relays no start 2000 ML320
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Joined: Jul 2017
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2000 ML320
Clicking relays no start 2000 ML320
Tried to start it this morning. While I was turning the key I also was adjusting the driver's seat switch. It got about a quarter crank before I hit the seat switch and then everything went dead and it wouldn't start. No crank no click. Tried jumping and I accidentally crossed my cables (stupid yellow jumper cable for a power lead, wtf is that about? Anyway, my fault for not double-checking.) Fixed that, still wouldn't jump but the dash lights were brighter when it was being jumped. Took the battery in, it was at 12.20V so they charged and load tested it, claimed it's good. Still won't start. When I leave the key in the "on" position I hear two relays clicking; under the hood, k14 (convenience relay/windows etc,) and passenger side k1 (seat comfort relay.) The dash lights and dome lights flicker with the relays like a battery drain. I tried disconnecting the ground on the seat switch, no change. Cleaned and retightened battery cables. The dome light has had intermittent problems the last month or so; passenger side has been off a couple months, then the driver's side went out for maybe a week and came back on. I also spilled a small amount of liquid on the shift console a few days ago. I'm past my skill level now, can someone walk me through what I should test next? I have a multimeter and can go get a test light if needed.
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Joined: Mar 2022
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ML270cdi W163
Same issue - light on dash dimming while clicking.
Hello Heather!
What was the soultion for the failure in your case? I have the same issue, K14 relay was warm all the time, i changed it to a new one and then the no start problem popped up. With clicking relays from engine comp. fuse box and from interior fuse box from below - and dimming odometer lights - no crank, and the warning lights not even switch on at key position 2.
If I disconnect the battery, then the warning lights come up in position 2 as normal, but when i turn to start it, just relay clicking and dimming odo lights. Till next battery disconnect.
Thanks for any hints!
Br, N
What was the soultion for the failure in your case? I have the same issue, K14 relay was warm all the time, i changed it to a new one and then the no start problem popped up. With clicking relays from engine comp. fuse box and from interior fuse box from below - and dimming odometer lights - no crank, and the warning lights not even switch on at key position 2.
If I disconnect the battery, then the warning lights come up in position 2 as normal, but when i turn to start it, just relay clicking and dimming odo lights. Till next battery disconnect.
Thanks for any hints!
Br, N
