Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
51 71... Removing and installing/replacing engine compartment protective features (security)
The protective features are bonded with WINDOW GLASS ADHESIVE .
Armor plating (1) stuck into left/right in FRESH-AIR DUCT (illustration on left).
When replacing fresh-air duct:
Stick in armor plating (1).
Armor plating (1) stuck into left/right MICROFILTER air duct.
When replacing air duct:
Stick in armor plating (1).
Protective mat (1) stuck into left MICROFILTER HOUSING LOWER SECTION .
When replacing left microfilter housing lower section:
Bonding position, protective mat (1):
Place protective mat (1) on brake fluid expansion tank. Coat upper side of protective mat with window glass adhesive. Place left microfilter housing lower section in installation position, remove again and press protective mat down firmly in this position without slipping.
Protective feature, top left wheel arch and top left bulkhead:
Protective mat (1) bonded to top left wheel arch. Protective mat (2) bonded to top left bulkhead.
Protective feature CONTROL UNIT (DME):
Protective mat (1) inserted between right suspension strut dome (4) and electronics box control unit (3) and bonded to suspension strut dome. Protective mat (2) inserted between electronics box control unit housing (3) and wheel arch and bonded to wheel arch.
Armor plating is installed above original cover and secured with original bolts (1).
Protective mat (1) is only bonded in area (3) with armor plating (2).
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.