Check Additive Message Help
Thread Starter
Newbie
Joined: Oct 2019
Posts: 14
Likes: 0
W205 C300 4Matic and W166 ML350 Bluetec
Check Additive Message Help
I’m getting the “Check Additive” message on every start. Came up after I took it to the local Mercedes dealer for an A service. I explicitly told them to not top of the Adblue but when I picked it up he said they filled it up but wasn’t going to charge me for it. Thought that was nice but next morning the message came up. I’ve never filled the tank all the way to max until they did. Fast forward to yesterday, took into my local Indy mechanic and he said after hooking it up to the computer it is saying there is 10 L in there and he even added some but the number didn’t change. He recommended I take it to the local dealer to get the software updated as the 2012’s has an issue with this or he thinks the float is stuck. Leaning towards the latter but wanted to see if anyone else had a similar issue.
MBWorld Fanatic!
Joined: Apr 2016
Posts: 1,124
Likes: 205
From: NW
2018 GLC 4MATIC
Sorry for of topic question, but what is disadvantage to fill tank all the way?
I have 2014 BT and always fill AdBlue till I see it.
I read it long time ago, suggestion was to keep it full as much as possible, minimize air and room for AdBlue "flowers" inside and maybe less corrosion.
I have 2014 BT and always fill AdBlue till I see it.
I read it long time ago, suggestion was to keep it full as much as possible, minimize air and room for AdBlue "flowers" inside and maybe less corrosion.
Thread Starter
Newbie
Joined: Oct 2019
Posts: 14
Likes: 0
W205 C300 4Matic and W166 ML350 Bluetec
Sorry for of topic question, but what is disadvantage to fill tank all the way?
I have 2014 BT and always fill AdBlue till I see it.
I read it long time ago, suggestion was to keep it full as much as possible, minimize air and room for AdBlue "flowers" inside and maybe less corrosion.
I have 2014 BT and always fill AdBlue till I see it.
I read it long time ago, suggestion was to keep it full as much as possible, minimize air and room for AdBlue "flowers" inside and maybe less corrosion.
Out Of Control!!
Joined: Sep 2018
Posts: 14,655
Likes: 4,560
From: unbegrenzt
2017 GLE350 4MATIC
What is the reason to not fill the AdBlue tank to the brim? I ran a TDI Touareg for 8 years and 238k miles and always filled the DEF tank to the brim. Never had a problem related to fill level. Lots of other problems (mainly NOx sensors and DPF related).
