newyorktoLA

Hey everyone!
I have a 2010 GL350 and the coil looking symbol (Pre-Glow indicator lamp) in the instrument cluster is not going out; sometimes, it stays on for hours, sometimes it stays on for a few minutes after starting the engine. What's weird is that the engine doesn't even need to warm up; I live in sunny SoCal

Has this happened to anyone? Is this a sign that my Bluetec will have future engine problems? I got a CEL before service and also got the CEL today as well after the pre glow lamp stayed on... I just had the car serviced less than 3K miles ago...Then again, I doubt the dealership did the whole service considering they crashed my car into a pole and did body work on my car without my permission!

Thanks for the feedback

SnowCub

Could mean anything, you need to pull the engine codes. Considering that it sounds like your Dealer isn't the most ethical, I'm sure they forgot to tighten something up. Find a new dealer/mechanic.

YYZ-E55

How's the lawsuit going?

Fourdiesel

Perhaps the full service included the crash and body work to fix it. S**t happens, but at least they need to be up front and candid about it.
Glo plug symbol that stays on usually means an engine electrical fault of some kind. If it flashes its serious, if it is on steady it's also serious but less so!

newyorktoLA

Thanks for the support you guys! The problem turned out to be a faulty ECU (at 53K miles?) and a couple of glow plugs (covered under extended warranty)

Ulster Roots

Local MB Dealer replaced glow plug control unit. Parts and labour came to $639.

Ulster Roots

I'm beginning to think 'Nothing' is the better option...my MB is definitely NOT turing out to be 'The Best'! I just picked up my ML350 BlueTech (108K miles) from my local dealer this past Tuesday following a week's worth of repairs. In addition to the glow plug warning light requiring the control unit replaced (see earlier post) I finally had to get the increasingly worse oil leak repaired. My car required the oil cooler seal replaced, at a cost of over $2300! I contacted Mercedes Canada H/O and they agreed to cover parts and 25% of labour (11 hrs). In the end, the total cost of both repais was almost $2400!
This morning on the way to church (about a mile from my home) the engine died...I mean DEAD! Had to get towed to dealership, less than a week since I picked it up. Doing a little Google search, it appears that 'catastrophic engine failure' is not uncommon with this engine. I'll find out tomorrow when the dealership opens, but I hope this isn't the case.
9 montha ago, my transfer case failed, fortunately under extended warranty, or it would have cost approx. $8000 to repair. I'm beginning to think I've bought a 'Mercedes Certified' LEMON! I bought a MB diesel because I thought I would be getting exceptional engineering, quality and therefore longevity...my expectations so far have not been met.

N_Jay

About $135 for the part at discount, so guessing $250 new.
How many hours did they charge?
I replaced mine in about 1 hour.

krd2023

Hi Ulster Roots, I share your pain. My 2010 ML350 Bluetec with 82K miles died under similar circumstances - the engine seized- less than a mile from my home and after a noticeable "clacking" sound in the engine upon startup, without any warning lights. All this after having numerous repairs including the oil cooler seal, AdBlue heater and pump, and glow plug replacements, all by the same dealer from where I bought the car new in 2010 with regular maintenance. What's the status on your, please? I found your thread in a Google search for "Bluetec engine problems" of which there appear to be plenty. Follow my current MBUSA saga in my thread here if interested: https://mbworld.org/forums/diesel-fo...ne-seized.html