Reduction Agent (Adblue®): Fill, Replace - Skoda Octavia IV 2020 Service Manual

Octavia IV 2020 ➤, Octavia IV 2021 ➤
Maintenance - Edition 12.2020
3.20
Reduction agent (AdBlue
⇒ p3.20.1 recautions when working with the SCR system (Sys‐
tem Catalytic Reduction)", page 92
⇒ p3.20.2 oints", page 93
⇒ t3.20.3 he reducing agent tank with the AdBlue refuelling
system e.g. VAS 6960/ VAS 6960A/ VAS 542 001", page 94
⇒ t3.20.4 he reducing agent tank with the AdBlue refuelling
system e.g. VAS 6542", page 95
⇒ t3.20.5 he reduction agent tank", page 102
3.20.1 Safety precautions when working with
the SCR system (System Catalytic Re‐
duction)
Follow these instructions when working on the SCR system:
WARNING
Risk of skin irritation due to reduction agent:
♦ Avoid contact with skin or eyes! Wear gloves!
♦ If reduction agent gets onto the skin, wash off with soap
and water.
♦ If reduction agent gets into your eyes, rinse them with
water for a few minutes.
♦ Do not inhale or swallow reduction agent!
♦ If you swallow reduction agent, rinse out the mouth,
drink plenty of water and seek medical treatment right
away.
♦ Prevent reduction agent from getting on trim- or body
parts.
♦ If this happens, wash off the reduction agent using clear
water and a lint-free wool cloth.
♦ If the reduction agent has already crystallised, use warm
water and a sponge.
♦ Reduction agent residues which are not removed even‐
tually crystallise and can damage the surface.
♦ Observe the disposal instructions for reduction agent
and top-up container.
Leaking reduction agent represents danger:
♦ To prevent large quantities of reduction agent from es‐
caping when opening the dosage line, wait for the reduc‐
tion agent to be sucked back automatically
Automatic back-suction of reduction agent
• After the ignition is turned off, the reduction agent is sucked
back out from the dosage line to the injection valve for re‐
duction agent - N474- back into the reduction agent tank.
• Before working in this area, you need to wait for the back-
suction to be completed. This may take up to 10 minutes
after turning off the ignition.
• The battery can also not be disconnected until this back-suc‐
tion has completed, i.e. 10 minutes after the ignition was
92
): fill, replace
®
⇒ page 92 .