GENERAL TIGHTENING TORQUES
Note. Screws coated with a locking fluid or self locking nuts must be replaced with new screws when reinstalling.
See the table below to find the tightening torques for components not included in the summary.
Nuts and screws which are not self locking can be reused provided that they are in good condition.
| Applies to screwed joint with strength class 8.8. | |
|---|---|
| Thread | Tightening torque (Nm) |
| M5 | 5 |
| M6 | 10 |
| M7 | 17 |
| M8 | 24 |
| M10 | 50 |
| M12 | 80 |
| M14 | 130 |
SUMMARY OF TIGHTENING TORQUES FOR SPECIFIC COMPONENTS
Note. Screws coated with locking fluid or sealant must be replaced with new screws on installation.
Always use new screws and nuts when angle tightening. Any exceptions to this rule will be indicated in the method.
Angle tightening in tight spaces, see SCREWED JOINT, TORQUE/ANGLE TIGHTENING .
| The air conditioning (A/C) system | |
|---|---|
| Connection block evaporator | 5 Nm |
| Linear HP pressure sensor (metal) | 8 Nm |
| Orifice connection (cap nut) | 20 Nm |
| Lower pressure switch (plastic) | 4 Nm |
| Valve housing HP (service valve) | 12 Nm |
| Needle valve/service valve | 6 Nm |
| Service valve | 12 Nm |
| Connection block air conditioning (A/C) pipe at firewall | 8 Nm |
| Mounting screw, drive plate (x52x4xx/B4xx4Sx) | 13 Nm |
| Drive plate mounting nut (D4xx4Tx) | 22 Nm |
| Compressor mounting screw (D4164T) | 20 Nm |
| Mounting compressor pipe/hose connection | 20 Nm |
| Air conditioning clutch drive plate | 24 Nm |
| A/C pipe to condenser | 16 Nm |
| A/C Low pressure pressostat | 4 Nm |
| AC Switch HT | 8 Nm |
| Refrigerant pipe to expansion valve | 4.5 Nm |
| Drier filter | 11 Nm |
| Screw climate control unit | 2 Nm |
| Door mirrors | |
| Mirror | 20 Nm |
| Rear view mirror to front door | 8 Nm |
| Tailgate/trunk lid | |
| Brake light for trunk lid | 4 Nm |
| Outer handle tailgate/trunk lid | 4 Nm |
| Parcel shelf, outer | 5 Nm |
| Door latch to luggage compartment lid | 20 Nm |
| Stop screw bump stop tailgate C30 | 1.5 Nm |
| Backseat | |
| Backrest to body C30 | 20 Nm |
| Seat belts | |
| Seat belt tensioner lap | 40 Nm |
| Seat belt tensioner to body | 4 Nm |
| Belt roller front C30 | 40 Nm |
| Belt roller front C70(06-) | 30 Nm |
| Seat belt (inertia) reel rear | 40 Nm |
| End mounting rear (lower mounting) | 40 Nm |
| Buckle safety belt to body | 40 Nm |
| Buckle safety belt to seat | 45 Nm |
| Distortion sensor to seat | 40 Nm |
| Front seat | |
| Front seat to body | 40 Nm |
| Front | |
| Bracket to front fender | 6 Nm |
| Bracket to front end | 6 Nm |
| Sun roof | |
| Sun roof frame | 10 Nm |
| Glass sun roof | 3 Nm |
| Engine coolant heater | |
| Flame sensor | 3 Nm |
| Mounting bracket engine coolant heater (3 nuts) | 10 Nm |
| Glow plug | 6 Nm |
| Lower mounting exhaust pipe engine coolant heater | 10 Nm |
| Mounting screw engine coolant heater (bracket connector) | 6 Nm |
| Water pump engine coolant heater | 6 Nm |
| Upper mounting exhaust pipe engine coolant heater | 10 Nm |
| Combustion unit to control module | 7 Nm |
| Contact reel/steering wheel module (SWM) | |
| Contact reel/steering wheel module (SWM) | 0.7 Nm |
| Supplementary restraint system (SRS) | |
| Collision sensor | 6 Nm |
| Airbag module seat (SIPS) | 7 Nm |
| Inflatable curtain to the body | 8 Nm |
| Impact sensor to body | 6 Nm |
| Center console | |
| Transparent center console | 0.6 Nm |
| Center console made of other material | 2 Nm |
| Screw bottom middle console | 2 Nm |
| Trim roof rails | |
| Mounting screws | 12 Nm |
| Side doors | |
| Door cassette | 10 Nm |
| Locking cylinder external handle (vehicles without KVM) | 3 Nm |
| Locking cylinder external handle (vehicles with KVM) | 4 Nm |
| Lock mechanism | 8 Nm |
| Door Window and Rear Quarter Window | |
| Window front side door | 8 Nm |
| Window to power window mechanism rear | 8 Nm |
| Side window adjusting screw | 8 Nm |
| Adjusting screw lift mechanism | 8 Nm |
| Attaching screws side window rear | 4.5 Nm |
| Window fixed, door rear to door | 3 Nm |
| Power window to door | 10 Nm |
| Trunk lid spoiler (S40 Sport only) | |
| Screws and nuts | 5 Nm |
| Rear bumper rail | |
| Screws | Step 1........ 18 Nm Stage 2........ angle-tighten 120° |
| Whiplash unit | |
| Whiplash element, self-tapping Torx screws, fixed seat Whiplash element, lock nuts | 9 Nm 18 Nm |
| Fitting bolt, hinge | 18 Nm |
| Hinge bracket to backrest | 9 Nm |
| Backrest cushion to seat cushion | 45 Nm |
See also:
• SCREWED JOINT, TORQUE/ANGLE TIGHTENING