SECTION 04 : EXHAUST AND AFTERTREATMENT
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 04 revised March 2021
not spill DEF on disconnected or unsealed
connectors. If DEF is spilled on a
disconnected or unsealed connector, the
connector must be removed immediately and
replaced.
Things to know about spilt diesel exhaust fluid
(DEF):
• If urea solution comes into contact with the
skin, rinse with plenty of water and remove
contaminated clothing.
• If urea solution comes into contact with the
eyes rinse for several minutes and call for
medical help if necessary.
• If inhaled breathe fresh air and call for
medical help if necessary.
• Do not allow the DEF solution to come into
contact with other chemicals.
• The DEF solution is not flammable. If the
DEF solution is exposed to high
temperatures, it breaks down into ammonia
and carbon dioxide.
• The DEF solution is highly corrosive to
certain metals, including copper and
aluminum.
• If the DEF solution is spilled onto the vehicle,
wipe off the excess and rinse with water.
Spilled DEF solution can form concentrated
white crystals on the vehicle. Rinse off these
crystals with water.
WARNING
DEF spilt onto hot components will quickly vaporize.
Turn your face away!
FIGURE 12
04052