Bluetec DEF Motor Noise
Thread Starter
Newbie
Joined: Sep 2015
Posts: 8
Likes: 0
GLK 250
Bluetec DEF Motor Noise
Aloha....I was wondering if anybody with a Bluetec notices the DEF pump whine (not high pitch noise just very noticeable) immediately after turning the vehicle off.
Any feedback would be greatly appreciate....
Mahalo,
Tor
Any feedback would be greatly appreciate....
Mahalo,
Tor
Thread Starter
Newbie
Joined: Sep 2015
Posts: 8
Likes: 0
GLK 250
Hi andreigbs....it's like this full DEF and honestly noticed as soon as I had the car. Brought to service twice and they say they do not notice anything. Very frustrating... I wonder if anybody else out there notice and noise after car is turned off in the rear of car.
I'm saying DEF pump but could be another pump or something else but you can hear it for good 10 seconds or so after car turned off.
We are here on Big Island of Hawaii and the GLK's we see are 350 so I would love to ask can I hear your car turn off...wow i must be some car sicko....lol
I'm saying DEF pump but could be another pump or something else but you can hear it for good 10 seconds or so after car turned off.
We are here on Big Island of Hawaii and the GLK's we see are 350 so I would love to ask can I hear your car turn off...wow i must be some car sicko....lol
MBWorld Fanatic!
Joined: Jul 2012
Posts: 1,369
Likes: 319
From: WI
GLK 250
Wondering if perhaps it might be a fuel pump in the tank, under the seat. There is a high pressure fuel pump in the engine bay but there is also be a sending fuel pump which primes the fuel system every time you switch the ignition on.
Do you notice it more with a full fuel tank or empty?
Do you notice it more with a full fuel tank or empty?
Trending Topics
Thread Starter
Newbie
Joined: Sep 2015
Posts: 8
Likes: 0
GLK 250
Hmm, I would have to say I notice on a regular basis. I try and not let her get low on fuel on a regular basis. So I'm thinking its all the time. You for sure notice the sound a lot more when you go to the rear of the car.
I'm wondering if I can record it and post it here. Yep, thats what I will try and do tomorrow.
Thanks all for your responses.
Tor
I'm wondering if I can record it and post it here. Yep, thats what I will try and do tomorrow.
Thanks all for your responses.
Tor
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Newbie
Joined: May 2017
Posts: 3
Likes: 0
2014 GLK250
Hmm, I would have to say I notice on a regular basis. I try and not let her get low on fuel on a regular basis. So I'm thinking its all the time. You for sure notice the sound a lot more when you go to the rear of the car.
I'm wondering if I can record it and post it here. Yep, thats what I will try and do tomorrow.
Thanks all for your responses.
Tor
I'm wondering if I can record it and post it here. Yep, thats what I will try and do tomorrow.
Thanks all for your responses.
Tor
Thanks!
