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SCR system (selective catalytic reduction) > < Exhaust gas temperature sender 3G495: Removing and installing
Exhaust gas temperature sender 4G648: Removing and installing
Exhaust gas temperature sender 4 -G648-: Removing and installing
t  Exhaust gas temperature sender 4 -G648-: Removing → Anchor
t  Exhaust gas temperature sender 4 -G648-: Installing → Anchor.
  Caution
Threads of exhaust temperature sender -G495- and -G648- are coated. Do NOT additionally grease with high-temperature paste and always adhere to the specified tightening torque → Chapter. Otherwise this can lead to loosening of the nuts/bolts and subsequent failure.
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Articulated wrench e/c 17 -T20212-, see equivalent → Anchor
  L26-10003
t  Torque wrench (5 - 50 Nm) -V.A.G 1331-, see equivalent → Anchor
  W00-0427
Removing .
–  Uncouple the electrical connector -2- for the exhaust gas temperature sender 4 -G648- and free the electrical wiring.
  Note
Ignore items -1- and -3-.
  A26-10696
–  Remove centre noise insulation -fastening points 1 ... 3-.
  A10-1565
–  Unscrew exhaust temperature sensor 4 -G648--1- with flexible-head wrench SW 17 -T20212-.
Fitting .
l  Tightening torque → Chapter
Installation is carried out in reverse order, noting the following:
  Note
t  Apply hot bolt paste to the thread of the temperature sender after the particle filter → Spare parts catalogue.
t  Fit cable ties in the original positions when installing.
  E10-10113

SCR system (selective catalytic reduction) > < Exhaust gas temperature sender 3G495: Removing and installing