This is what eLearn says for bumper removal and replacement:
Removing (
Refitting
) - Position the vehicle on a lift.
- Raise the vehicle.
1. Working on both sides of the bumper, disconnect the electrical connections for the fog lights.
Description
Connector
1
LEFT FOG LIGHT
See F015 LEFT FOG LAMP
1
RIGHT FOG LIGHT
See F016 RIGHT FOG LAMP
1. Undo the lower bolts fixing the bumper.
1. Working on both sides of the vehicle, undo the bolts fixing the wheel arch.
2. Undo the bolts fixing the bumper to the wings.
1. Move the front edge (1a) of the left front wheel arch.
2. Disconnect the headlamp washer supply pipe (2b) from the pump (2a).
- Lower the vehicle.
1. Undo the upper bolts fixing the bumper.
1. Release the side ends (1a) of the bumper from the retainers (1b).
2. Remove the front bumper.
- If necessary, dismantle the bumper.
Op. 7205E10 STRIPPING FRONT BUMPER
Refitting (
Removing
) - Check that the bumper is not damaged.
Op. 7205E10 STRIPPING FRONT BUMPER
- Position the bumper and fit in its seat, doing up the side retainers.
- Tighten the upper bolts fixing the bumper.
Component
Fastening
dia
Value (daNm)
Validity
front bumper
Bolt
M6
0.6 ÷ 1.0
- Raise the vehicle.
- Connect the headlamp washer supply pipe to the pump.
- Tighten the bolts fixing the bumper to the wings.
Component
Fastening
dia
Value (daNm)
Validity
front bumper
Bolt
M6
0.6 ÷ 1.0
- Tighten the wheel arch retaining bolts.
- Tighten the lower bolts fixing the bumper.
Component
Fastening
dia
Value (daNm)
Validity
front bumper
Bolt
M6
0.6 ÷ 1.0
- Connect the electrical connection for the fog light.
- Remove the vehicle from the lift.
However, if the bumper looks right to the lights, are you sure its not the bonnet thats wrong? Pictures would be handy!