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Fan running when key is in aux

HI community! We recently purchased a beautiful 1981 240D for our college bound son. We noticed that the fan comes on when the key is in aux. to let the glow plugs warm up. Why, would this be? We have...

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Bluetec - OM642 Extended Warranty Problems -- LET ME HELP!

As expected, MBUSA's warranty games extend to the Bluetec Extended Modification Warranty. A month after my emissions modification from Mercedes, my engine developed a ticking that was clearly timing...

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E350 CDI OM642 poor idle after cold start

Hello MB gurus, I have a 2010 E350 CDI coupe (OM642) which I drive almost every day. Everything is fine until I leave the car for 2-3 days without starting the engine. Then after starting it, the idle...

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How to make Tesla/Bosch I booster work

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How to clear or bypass the adblue countdown

Adblue start countdown is on and will not go away even after clearing the codes any suggestions on what to do or on any device that will work on getting rid of it.

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ml270cdi om612 ping/rattle/tap/tick under load

im writing this as a final attempt to find out whats wrong with my PoS ml before i buy a liter of gasoline and set it on fire. At WOT there is a pinging /rattling sound that completely dissapears the...

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Bluetec to gas swap ?

Hi I have a 2013 E350 Bluetec that I maintained at the Mercedes dealership. One day it started knocking I had the car towed to the dealership and they informed me that I needed a Big Block and it would...

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Standalone test of GP controller?

With a GP controller (from om648) out of the car is there an easy way to test to see if it is good? Backstory: I had swapped a GP controller in my E320 CDI om648 after getting a controller error: no...

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Limp mode on kickdown

2016 220d GLC : Car runs great until I use kickdown in 7th 8th or 9th gear. Engine management light shows and car goes into limp mode. Checking fault codes shows P0087 and P0088 - high pressue fuel...

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2010 R350 AMG Bluetec hesitation

I bought a 2010 R350 AMG Bluetec with 78K miles a couple months ago. It just started having a hesitation when pulling off from a stop just as it shifts from first gear to second. The hesitation feels...

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Post Emissions Mod Problems?

Son has a GLS of the last year sold in US with the V-6 Bluetec engine. Had the emissions update installed about a year (less than 10k miles) ago. Has 98,000 miles and the engine just seized. No oil...

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Diesel Fuel "Additive" ???

I have 82, w123, 240D and live in Southern Cal. at the beach, so our weather does not vary much and I do not have to "winterize" my car. She has 300,000 miles and run good. No issues. Yesterday I was...

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HFM mass air flow ECU expactation vs. current value (too low)

Hello all, Mercedes CLS w219 3.0 V6 - I exchanged turbo actuator after year not working (no comments please), and after this year DPF is in terrible status - 300 % fulfilled. I wanted to start burn it...

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What to do with my extra om648 engine (and 722.6 trans)?

The original engine in my car, as I purchased it, has a trashed GP hole (not repairable). Engine has about 196k miles and ran very strong before I yanked it. I'm afraid that the cost of replacing the...

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OM648 stripped injector bolt solution?

Today it stripped during installation, at the start of my second 90 degree turn. I try hard to be careful (the bolt hole was perfectly clean all the way to the bottom). I’ve replaced all 6 seals...

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Leak 1 Year After Emissions Fix; Also Injectors Giving Error Messages

Just want some advice before I take my car in. MB did the emissions fix on my 2012 Bluetec E350 about a year ago. Had about 110,000 miles on it but had never leaed. A few months after the fix it began...

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2012- GL 350 bluetec - Starting to realize I am in the same boat and many...

Good Morning Everyone, Thank you very much for allowing me to join and post here. I joined after reading other posts and stories of people who are going throgh the same thing I am. I am at the point...

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Mercedes R320 CDI 4matic V6 diesel

Hi guys, I apologize if this is the wrong place, but can't seem to find the correct place to put this post but, I have recently come into possession of this beautiful Mercedes R320 CDI 4matic V6...

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603 Swap

My 1987 603 was smoking, and instead of figuring out the problem I installed a different 603 engine with low hours. The new engine had a 24 volt starter, alternator, and my latest issue is the glow...

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OM 651 Oil in Coolant

Hello, I recently acquired a 14 E250 with 122k miles. I noticed one morning that I had a check coolant light on the dash when I started the car. I went under the hood and noticed that the coolant which...

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