Did my own AdBlue on 2010 GL350 for <$50 - Photos
Last week at roughly 35,500 miles the AdBlue warning came on.
Based on information from this forum I bought a 1/2 gallon bottle AdBlue from VW and two 2.5 gallon jugs of BlueDef from a local auto parts store.
No one at MB was able or willing to give me the quantity left in the tank when the light comes on other than saying I'd have about 1000 miles left of AdBlue +/- so I just figured I use what I had and see how far it got me.
As you'll see from the photos, I emptied the 1/2 gal dealer jug and then cut a hole in the bottom for the nozzle of the 2.5 gal jugs.
I lined the back of the interior compartment with old towels not knowing if it would overflow or splatter. It did neither.
It was a simple process that took about 25-30 mins to complete and I'm not mechanical at all. The warning light went off within the first few miles of driving.
Photos attached below from my cell phone.
Thanks to those who went before me on this for sharing info and saving me several hundred dollars!

Robert

Furthermore, is this dealer charge of $250 only lasting for 10,000 or 11,000 miles in your GL ?? That computes to 2.7-cents per mile or an additional 65-cents per 25 miles (or gallon of fuel).
That additional cost appears to me to negate the higher MPG purpose of purchasing a CDI in the 1st place? Surely I must be missing something? -Thanks
Last edited by gocargo; Jul 21, 2012 at 01:42 AM.
Last week at roughly 35,500 miles the AdBlue warning came on.
Based on information from this forum I bought a 1/2 gallon bottle AdBlue from VW and two 2.5 gallon jugs of BlueDef from a local auto parts store.
No one at MB was able or willing to give me the quantity left in the tank when the light comes on other than saying I'd have about 1000 miles left of AdBlue +/- so I just figured I use what I had and see how far it got me.
As you'll see from the photos, I emptied the 1/2 gal dealer jug and then cut a hole in the bottom for the nozzle of the 2.5 gal jugs.
I lined the back of the interior compartment with old towels not knowing if it would overflow or splatter. It did neither.
It was a simple process that took about 25-30 mins to complete and I'm not mechanical at all. The warning light went off within the first few miles of driving.
Photos attached below from my cell phone.
Thanks to those who went before me on this for sharing info and saving me several hundred dollars!

Robert
Furthermore, is this dealer charge of $250 only lasting for 10,000 or 11,000 miles in your GL ?? That computes to 2.7-cents per mile or an additional 65-cents per 25 miles (or gallon of fuel).
That additional cost appears to me to negate the higher MPG purpose of purchasing a CDI in the 1st place? Surely I must be missing something? -Thanks

Don't the newer models have the nozzle under the fuel flap now?
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I think 18K miles (almost all Interstate miles) on a tank of AdBlue isn't bad at all.
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Ask them to break down the $300 by parts and labor. That would be entertaining.





you fill the tank from empty the cdi and src modules are soposed to be reset and the fill
level reset... Now most of the times you wont have a problem but ive seen issues come
up when there not reset..... no start issues and visit workshop lights come on... I know when i do it i flush the tank out of old and fill.. reset system and update the software so its not just a 20 min fill
But also if someone spends 30 min doing something to your car dont you think they should be
paid for there time... not saying 200 or 300 is fair at all..
If you go and shop around for cheap add blue of corse it will be cheaper than the dealer
If you do the work your self of corse its free you spent your own time
comparing apples to apples would be comparing dealer prices to other dealers not to
your self doing it
paid for there time... not saying 200 or 300 is fair at all..
If you go and shop around for cheap add blue of corse it will be cheaper than the dealer
If you do the work your self of corse its free you spent your own time
comparing apples to apples would be comparing dealer prices to other dealers not to
your self doing it
This is precisely the reason why I don't trust dealers. They deserve to make a profit, but to take advantage of their customers leaves a very bad taste in my mouth. I know they all do it, not just Mercedes, but the point is consumers need to be smart to avoid being taken advantage of. I am sure most Mercedes drivers are weathy enough and don't care, but personally, I don't like burning money even if I have it to burn.




I don't necessarily recommend doing this with any oil change shop. The shop I use has been changing my oil for many years and multiple Mercedes. They have always done a good job and I can watch them while they work so I can make sure it is done right.
Filling your entire tank from empty is less than $50 worth of DEF and 10 minutes - I just did a complete flush of mine at 20,000 miles and it took about 15 minutes including pumping the old fluid out by hand. If you want to pay the dealer $100 or $200 or more for this - well I think plenty of Mercedes owners are not real price sensitive and Mercedes will charge what the market will bear.
On the topic of dealer rip offs - I just had the opposite example. My local dealer was just running a special for $98 for an oil change for any model Mercedes - that's cheaper than I could buy the oil and filter alone for my GL. Plus they do a free inspection and wash. Great deal.




I think that they just come up with an average price - with 9 quarts of oil that costs close to $12 per quart retail our GLs are not exactly average...
When I last changed my oil, I started looking for the periodic Mobil 1 sale at O'Reilly's about 90 days before I was due for a change - so I got it for $5 per quart on sale. These sales also don't differentiate between the type of Mobil 1 - even our super pricy ESP Formula M went on sale for the same price as the basic stuff.
I forgot to do this for my 20k change, so the dealer was the lowest price option.

This is precisely the reason why I don't trust dealers. They deserve to make a profit, but to take advantage of their customers leaves a very bad taste in my mouth. I know they all do it, not just Mercedes, but the point is consumers need to be smart to avoid being taken advantage of. I am sure most Mercedes drivers are weathy enough and don't care, but personally, I don't like burning money even if I have it to burn.
you fill the tank from empty the cdi and src modules are soposed to be reset and the fill
level reset... Now most of the times you wont have a problem but ive seen issues come
up when there not reset..... no start issues and visit workshop lights come on... I know when i do it i flush the tank out of old and fill.. reset system and update the software so its not just a 20 min fill
I wasn't going to say anything but I doubt the original poster had his Adblue tank topped off by the dealership before purchasing his GL. The tank was probably last serviced at 20,000 miles by the previous owner's dealership. The mileage when the light came on would seem to indicate that.
Last edited by 43221B; Jul 25, 2012 at 10:27 AM.

The system has a control module the scr module this is we're we put logic in to the system it logs when each sensor is not 'wet' and if not reset it stores this data and I've seen the module go in to a limp mode because it was filled and not reset... Not saying this always is the case but have seen it numerous times
Now with that said Im just trying to save some one getting stranded so It really doesn't bother me what who believes I've been a diag tech with Benz for 15 years so belive whom you want
I wasn't going to say anything but I doubt the original poster had his Adblue tank topped off by the dealership before purchasing his GL. The tank was probably last serviced at 20,000 miles by the previous owner's dealership. The mileage when the light came on would seem to indicate that.
Last edited by 43221B; Jul 25, 2012 at 02:36 PM.

I give up this forum is such a joke all there are are shade tree mechanics that think they know everthing in the world and bark at people whom are just trying to help... Did I design the car NO .... Am I responsible for problems, defects, break downs. NO am I just tring to share infor that I took the time to learn and test and figure out myself
And pass some knowledge to others yes but evertime
You do it here joe schmoe whom change his light bulb
In his drive way knows more or knows why your wrong
I see every day why olord left this place and for the decent
90% of the members I apologies .. Leson learned


