Fill Adblue(R) Tank - Perform External Filling - AP49.20-P-0100-02A

Model 118, 167, 177, 247, 257 with code U79 (BLUETEC (SCR) diesel exhaust treatment, generation 3) 

Model 463 

as of model year 2019 

with code M020 (BLUETEC) 

	Risk of burn injuries and scalding  when working at AdBlue lines and the components attached to them. Risk of injury  to skin and eyes when handling AdBlue. Risk of poisoning  caused by swallowing AdBlue	Pour AdBlue into suitable containers only. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.	AS14.40-Z-0001-01A
	Notes on use, material properties and handling of AdBlue(R) for service		AH14.40-P-0001-02A

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

External filling, shown on model 177.0 with engine 608.9 

Courtesy of MERCEDES-BENZ USA

1. Open fuel filler flap.
2. Open cap for filler neck on AdBlue® container (8).
3. Open 10 L AdBlue® refill canister (6) and tightly screw one-way filling hose (4) with canister connection (4a) onto 10 L AdBlue® refill canister (6).
4. Screw one-way filling hose (4) to filler neck connection (4b) on AdBlue® container (8) filler neck.
5. Lift 10 L AdBlue® refill canister (6) as per picture and drain into AdBlue® container.

   When 10 L AdBlue® refill canister (6) is completely drained,

   ↓

   lower 10 L AdBlue® refill canister (6) below level of

   AdBlue® container filler neck (8). Unscrew 10 l

   AdBlue® refill canister (6) on canister connection (4a) of one-way filling hose (4) and dispose of it. Tightly screw a new 10 L AdBlue® refill canister (6) to canister connection (4a) of one-way filling hose (4) and repeat operation step  5.

   When the 10 L AdBlue® refill canister (6) no longer drains,

   ↓

   the AdBlue® container is then completely filled. Continue with operation step 6.

6. Lower 10 L AdBlue® refill canister (6) below level of AdBlue® container filler neck (8).
7. Carefully unscrew filler neck connection (4b) from AdBlue® container filler neck (8) and lift above level of 10 L AdBlue® refill canister (6). This is so that the AdBlue® can flow out of the one-way filling hose (4) back into the 10 L AdBlue® refill canister (6).
8. Unscrew canister connection (4a) from 10 L AdBlue® refill canister (6) and seal 10 L AdBlue® refill canister (6).
9. Dispose of one-way filling hose (4).
10. Seal cap of filler neck for AdBlue® container (8).
11. Close fuel filler flap.