REMOVING AND INSTALLING/REPLACING FRONT EXHAUST MANIFOLD (N52K)
Necessary preliminary tasks:
NOTE: The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove control sensor from cylinders 1 to 3.
Remove monitor sensor from cylinders 1 to 3.
Unscrew nuts.
Remove exhaust manifold (1).

Fig. 15: Locating Nuts
Installation:
Clean sealing faces and replace seals.
Replace nuts.
Tightening torque, 18 40 1AZ.

Fig. 16: Locating Seal Beads
REMOVING AND INSTALLING/REPLACING REAR EXHAUST MANIFOLD (N52K)
Necessary preliminary tasks:
NOTE: The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove control sensor from cylinders 4 to 6.
Remove monitor sensor from cylinders 4 to 6.
Unscrew nuts.
Remove exhaust manifold (1).
Installation:
Clean sealing faces and replace seals.
Replace nuts.
Tightening torque 18 40 1AZ.
Exhaust System, Complete
Mufflers
Green lights - Indicator/warning lights
General Information On Intelligent Battery Sensor (IBS)