First of all check that the bonnet is correctly shut.

Check that the wind noise is actually coming from the bonnet.

Proceed as instructed in the

See table T001 WIND NOISE FROM THE FRONT DOORS

Proceed as instructed in the

See table T002 WIND NOISE FROM THE REAR DOORS

Proceed as instructed in the

See table T006 WINDSCREEN WIND NOISE

Proceed as instructed in the

See table T010 PASSENGER COMPARTMENT WIND NOISE, LOWER AREA (UNDERBODY)

Proceed as instructed in the

See table T020 WIND NOISE FROM THE SUN ROOF

Proceed as instructed in the

See table T025 WIND NOISE FROM THE REAR AREA

Carry out the test to locate the wind noise from the bonnet accurately

locate the area where the wind noise is coming from

Check the foam buffers where the bonnet and the wings are matched at the rear. Also check the condition of wind seals and make sure they are fitted correctly (see

Op. 7025A62 BONNET LID WEATHERSTRIP - R+R

Check for the seal between the bonnet and the radiator grille

Op. 7055A84 FRONT BADGE ON BONNET LID OR RADIATOR BADGE - R.R.

Check the condition of the front wind seal and make sure it is fitted correctly

Op. 7025A62 BONNET LID WEATHERSTRIP - R+R

Check the flame partition. In particular, check:

- the plugs are present;

- the plugs are correctly fitted;

- the bulkhead coupling rubber fittings are installed correctly;

- sealant properly applied;

- correct installation.

Renew fireproof bulkhead

Op. 7095E20 SOUNDPROOFING PANEL ON PASSENGER COMPARTMENT FRONT BULKHEAD - R.R WITH HEATER OR AIR CONDITIONING UNIT REMOVED