Parking Light Delay Humm
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More Turbo
Joined: Aug 2010
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From: Green Acres, Ca.
Parking Light Delay Humm
OK, here's a new one. Me and the wife heard this humm from my truck last night. Open a door, any door and the parking lights come on with a quite little humm, close the door and the lights go out after 25 seconds with the same little humm. Unlock the doors with the remote, doors unlock, parking lights come on with the little humm, lock the doors with the key remote and the lights go out with NO humm. It just started doing this, I don't think it has anything to do with the DEF pump that was just replaced. The humm seem to be coming from somewhere around the drivers side firewall in the engine compartment. It humms when the parking lights come on and go off. Seems like it has something to do with that stupid parking lamp delay system.
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From: Roll Tide, Roll
Rick. Slide under your vehicle.get close to transmission pan.with door shut hit key fob to lock or unlock door. that is probably your noise. if you have somebody handy. just slide under it and let them do all of what you stated. you will still hear that humm right about dead center of transmission pan.
Lead Driver
Joined: Jan 2010
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Is it constant or short?
An example of short is in this video.
It's normal but we still don't know what it is.
Were you up to date on firmware flashes prior to your DEF pump repair?
https://www.ford-trucks.com/forums/9...lash-tone.html
and
https://www.ford-trucks.com/forums/1...l#post10763147
An example of short is in this video.
It's normal but we still don't know what it is.
Were you up to date on firmware flashes prior to your DEF pump repair?
https://www.ford-trucks.com/forums/9...lash-tone.html
and
https://www.ford-trucks.com/forums/1...l#post10763147
Thread Starter
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More Turbo
Joined: Aug 2010
Posts: 630
Likes: 30
From: Green Acres, Ca.
I have noticed today that sometimes when the parking lights go off I hear just the relay clicking off and other times I hear the short humm. I guess lots of people has this same issue. Should I be worried about it or just write it off and pay attention to it?
Lead Driver
Joined: Jan 2010
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The "meep" noise from the transmission pan I write off as normal but that's the only electrical noise I have related to lights/door locks/whenever it feels like it.
But one day someone will find out what the truck is doing.
But one day someone will find out what the truck is doing.
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From: Roll Tide, Roll
Kper05. As far as the buzzing noise in trans solenoids, that is not normal the designing engineer and me and service manager was told, that the only time that should buzz is just when you start to put key in the ignition. And only then we were informed that you would have to have a stethoscope up to pan to hear it. It is a concern that hasn't been resolved,and don't likely will be. Sometimes I think this is what makes the trans shift stupid at times. Most can buzz days later if you don't drive it. I've been there I've done it, ford had mine over 100 days and could not resolve it. Some trucks are very quite while others are plain loud. I have recorded hours of buzzing with the keys in the house. The bottom line why it isn't getting resolved is most folks don't complain about it.and accept it is normal.at the time they attempted to fix mine they tried 5 others that you could not make them buzz.I do not remember mine buzz till after the 400/800 flash. And I was under the truck alot.
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From: Roll Tide, Roll
Kper05. Yes it does but it is very quite. And it won't go on for days at a time. The same engineer has agreed that it should not even make the noise that it does. But i am not going to leave this truck over a 100 days while they couldn't resolve the 1st truck. I am hoping if enough folks bring it up, they will press the issue for a fix.I had recordings videos, worked extensively with them. To have in writing ford cannot resolve this issue.it is a issue that all engineers involved were puzzled. Hey they built it. They gave me a loaner truck that I could not make it have the noise. Interesting to say the least.
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