Have a 2014 GLK250 Bluetec we bought new now have 97k miles. We have not done the emissions recall yet. Has anyone noticed any differences or had any issues after having this recall performed?

Any input is appreciated.

Some experiences are posted in this thread...
https://mbworld.org/forums/diesel-fo...it-usa-22.html

I linked to the page when individuals started getting the AEM performed. Happy reading.

Good start it to realize that there is no recall, however the feedback is that dealers force AEM with any visit.

I just had mine done a couple days ago. so far it seems like nothing has changed but im sure ill start burning through NOX sensors and soot sensros soon enough.

There is no designated soot sensor on those engines.
The value is calculated from differential pressure, when those sensors seem to last.
Nox sensors seem to behave just like old O2 sensors. Some of them last for the life of vehicles, some of them just burn.
When O2 sensors selling for $50 are never a big deal, the Nox sensor with SCN coding can zoom towards 4-digits at dealer.
In case you don't have warranty, there is ebay seler, who sells Nox probes for $70. Replacing probe only avoids SCN coding.

Ive been using the Chinease Nox sensors for over 3 years now.

I buy them for $65-75 from AliExpress snd the first one lasted 3 years. Seconds one was a bit flakey (sometimes sets off a Cel)

pretty straight forward, cut the off old sensor from module, and solder in new.

I took my ML250 in for the BlueTecBlueTec and an EGR valve replacement. I got it back and very little performed well at all. There are power problems and shifting problems at the top of the list. The coding in the ECU had to be rewritten remotely from Germany.The dealer has been working on it and now it is throwing a fuel rail pressure code, P0087. The dealer tells me my cost is going to be $3800 to replace the fuel rails. Anyone else see this issue during our immediately after the Texas work. Could it be the new ECU coding or a bad sensor be causing the different pressures in the two fuel rails.

They should have just bought it back.

When on car with significant mileage everything is possible, the reported issues with AEM mostly boil to uneducated mechanics doing something wrong.
I picked up my E250BT from AEM a week ago and only on final statement I read that after flashing ECU mechanic found electrical error in it and replaced it.
On sedan AEM is $8300 job, when new ECU cost close to 2 grands.
Still no charge to me. I think I would have hard time to sell the car for the money they put in it, but there is no way around it. Still love the car and doesn't look like anything better will come on USA market with next decade.
Than we will have electric with full autopilot, who you will command from rear seat.

2014 ML 350 Bluetec, modification done a year ago at 108,000, now 122,500 and no problems. Fuel mileage is better, never did use much Adblue and can’t tell it uses anymore than before. Great Dealer in Gainesville, Fl and no comebacks to fix what they did. Nice warranty included so I am happy so far!

I requested to dealer to let me know when parts will be available (currently on backorder) so that the field service (AEM) can be performed.

according to the bluetec website it must be installed by May 2023 to qualify for the payout.

Double check the date.
Original deadline was October 1, 2022

May 2023 is the Canadian deadline to have the field measure completed and claim filed. We're always a step behind.

I just had my "Update" performed last week. The MIL was illuminated, and when I scanned it a few months ago, I forget the exact codes now, it was nothing but Bluetec/emissions related. The dealership returned my '14 GL350. with the MIL light still illumined, and the service advisor told me I'd need to reschedule another appointment, soonest is 60 days away, and sign that I would be responsible for the $160 service charge. WTF. Anyway, my vehicle, had many drivability issues now, that it did NOT have prior to the update. Hard extended crank starting, rough idle, harsh shifting, horrible turbo lag like hesitation when accelerating. Why wouldn't the tech scan to see why the MIL light still illuminated after the update to see if it might me Bluetec and/or emissions related? I ran the codes, ant the MIL is a result of a malfunctioning ERG. Good Grief!

Im really worried about this. My car runs perfectly fine, 100km/day every day. Im wondering if I should avoid the update..

I noticed the left and right intake manifolds are replaced as part of field measure, can someone confirm if this is the case?

The parts cost is roughly $8k total, but it seems this is not retail value, which would be SIGNIFICANTLY higher.

For example the two NOX sensors are $370, but as you all know, these typically sell for $800+ each...

I paid $270 for Nox sensor 3 years ago.
But I agree that AEM is quoted at wholesale, and/or discounted prices. .
When I was ordering new DPF over 3 years ago, they price at internet dealer was $2800.
For AEM the quote was $1800.
I don't recall any AEM covering intake manifolds, but you can check it on settlement site.

I had the recall performed last week and Ive done about 500km since.

Overall the car has a bit more power, and the mechanic did a great job.

I did intakes myself last summer and had the swirl flaps deleted. Now that I have new OEM intakes with flaps, I think it was a mistake to delete the flaps. The car has more power low end and fuel mileage is better as well.

I had my GLK 250 blue tech (2014) done about two month ago and received the over $2000.00 Cheque. I didn’t notice any performance decline but now have a water leak in my trunk which may or may not have anything to do with this.

FWIW, none of the components involved are located in the trunk.

I took my beloved S350 bluetec for diesel emissions recall work in early 2022 at a dealer which did not seem to alter the great mileage this car gets (25 to 30 mpg). I recently noticed a whistle sound and learned that the rear turbo exhaust return was loose during a regular service at my regular mechanic. Because the emissions rebuild came with a 50,000 mile warrantee, my mechanic suggested having it fixed by the dealer. The dealer fixed the broken bracket for free but said it was not involved in the emissions rebuild.
I do not understand how that can possibly be true? Any other experience out there with 350 bluetec rebuilds?

Got the AEM done on my E350 in December , it took like a month, drove the car about 500 miles and the check engine was on.
Took the car to AutoZone to have it scanned but there were no codes showing.(that was weird )
Drove it to the dealer turned out to be a DEF heather ( the DEF level was not low). The dealer changed the heating element free of charge.
One thing I noticed after the AEM , there is a very strong smell from the exhaust. It was not anything like that before, its so bad I though that there was a exhaust leak some were, but was assured there was no leaks.
Have someone else noticed bad exhaust smell after the AEM??

Maybe not part of the recall but had to be brokern into in order to replace all the exhaust stuff, they didnt tighten it up hence why they took care of it for free without admitting any wrong doing. They screwed up the reinstall.

I've noticed no Diesel exhaust smell at all. The only thing unusual is once in a while when I park the car I notice a smell sort of like melting plastic, which I've always attributed to an interrupted regen cycle, but I don't know that for sure.

Not true. Some of them are completely done from the underside... as in even the plastic engine cover doesn't come off. Depends on the vehicle and the model year.

My first impression after having the emission rebuild on my S350 bluetec was that the car exhaust had a stronger and markedly more conventional diesel smell. That was months before I noticed the whistle sound that drew my attention and ended up with the repair. Now that the turbo clamp is set properly, my sense is that there is not so much of a diesel smell.