Nissan Qashqai J11. Manual - part 1622

BRM-316

< PRECAUTION >

[EXCEPT FOR EUROPE AND RUSSIA (LHD)]

PRECAUTIONS

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

6.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

REPAIRING HIGH STRENGTH STEEL

BRM-317

< PRECAUTION >

[EXCEPT FOR EUROPE AND RUSSIA (LHD)]

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REPAIRING HIGH STRENGTH STEEL

High Strength Steel (HSS)

INFOID:0000000010499109

High strength steel is used for body panels in order to reduce vehicle weight.
Accordingly, precautions in repairing automotive bodies made of high strength steel are described below:

Tensile strength

Major applicable parts

440 - 780 MPa

• Trans control reinforcement

(Center front floor assembly component part) 

• 2nd crossmember

(Front floor assembly component part) 

• 3rd crossmember

(Front floor assembly component part) 

• 3rd crossmember reinforcement

(Front floor assembly component part) 

• Lower dash crossmember

(Lower dash assembly component part) 

• Side  dash

(Side dash assembly component part) 

• Inner front pillar reinforcement

(Side dash assembly component part) 

• Front suspension spring support

(Front strut housing assembly component part) 

• Engine mounting bracket reinforcement

(Front strut housing assembly component part) 

• Engine mounting bracket

(Front strut housing assembly component part) 

• Front bumper reinforcement assembly
• Lower front bumper stay 
• Front side member closing plate (Front)

(Side member closing plate assembly component part) 

• Outer add on frame bracket

(Side member closing plate assembly component part) 

• Closing plate reinforcement

(Side member closing plate assembly component part) 

• Front side member assembly
• Engine mounting member bracket assembly
• Front suspension mounting rear bracket assembly
• Inner sill extension

(Rear side member assembly component part) 

• Inner rear sill

(Rear side member assembly component part) 

• Outer rear anchor reinforcement

(Rear side member assembly component part) 

• Rear side member extension assembly
• Inner front side roof rail assembly
• Upper inner front pillar assembly
• Inner center pillar (Lower)

(Inner center pillar assembly component part) 

• Lower front pillar hinge brace
• Rear bumper stay assembly

BRM-318

< PRECAUTION >

[EXCEPT FOR EUROPE AND RUSSIA (LHD)]

REPAIRING HIGH STRENGTH STEEL

Read the following precautions when repairing HSS:

1.

Additional points to consider
• The repair of reinforcements (such as side members) by heat-

ing is not recommended, because it may weaken the compo-
nent. When heating is unavoidable, never heat HSS parts
above 550

°

C (1,022

°

F).

Verify heating temperature with a thermometer.
(Crayon-type and other similar type thermometer are appropri-
ate.)

• When straightening body panels, use caution in pulling any HSS panel. Because HSS is very strong,

pulling may cause deformation in adjacent sections of the body. In this case, increase the number of
measuring points, and carefully pull the HSS panel.

• When cutting HSS panels, avoid gas (torch) cutting if possible.

Instead, use a saw to avoid weakening surrounding areas due
to heat. If gas (torch) cutting is unavoidable, allow a minimum
margin of 50 mm (1.97 in).

Tensile strength

Major applicable parts

980 - 1350 MPa

• Front side member rear extension

(Front floor assembly component part) 

• Inner sill assembly
• Lower center dash crossmember assembly
• Front bumper reinforcement assembly
• Front side member closing plate (Rear)

(Side member closing plate assembly component part) 

• Front side member (Rear)

(Front side member assembly component part) 

• Inner center pillar (Upper)

(Inner center pillar assembly component part) 

• Outer side roof rail
• Center pillar hinge brace (Upper)

(Center pillar hinge brace assembly component part) 

• Outer front pillar reinforcement

(Front pillar hinge brace assembly component part) 

• Outer sill reinforcement

(Outer sill reinforcement assembly component part) 

• Rear bumper reinforcement assembly

PIIA0115E

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REPAIRING HIGH STRENGTH STEEL

BRM-319

< PRECAUTION >

[EXCEPT FOR EUROPE AND RUSSIA (LHD)]

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• When welding HSS panels, use spot welding whenever possi-

ble in order to minimize weakening surrounding areas due to
heat.
If spot welding is impossible, use MIG. welding. Do not use
gas (torch) for welding because it is inferior in welding
strength.

• Spot welding on HSS panels is harder than that of an ordinary

steel panel.
Therefore, when cutting spot welds on a HSS panel, use a low
speed high torque drill (1,000 to 1,200 rpm) to increase drill bit
durability and facilitate the operation.

2.

Precautions in spot welding HSS
This work should be performed under standard working condi-
tions. Always note the following when spot welding HSS:
• The electrode tip diameter must be sized properly according to

the metal thickness.

• The panel surfaces must fit flush to each other, leaving no

gaps.

PIIA0144E

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