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.
11 00 050 Removing and installing/replacing engine (N63)
Special tools required:
Necessary preliminary work:
- Clamp off BATTERY
- Move ENGINE COMPARTMENT LID into service position
- Remove earthing cable
- Remove CONSOLE for windscreen wiper system
- Remove AIR DUCT
- Remove MODULE CARRIER
- Remove both INTAKE SILENCER HOUSINGS
- Disconnect coolant hoses from engine
- Disconnect coolant hoses from charge air cooler expansion tank. See 17 13 020 REMOVING AND INSTALLING/REPLACING INTERCOOLER EXPANSION TANK (N63) .
- Disconnect line from tank vent valve
- Release FEED AND RETURN LINES for engine oil cooler
- Release SUCTION LINE and return line on oil reservoir
- Release power steering pump . See 32 41 037 REMOVING AND INSTALLING/REPLACING POWER STEERING PUMP FOR HYDRAULIC STEERING GEAR WITH DYNAMIC DRIVE (N63) or 32 41 033 REMOVING AND INSTALLING POWER STEERING PUMP FOR POWER STEERING GEAR WITH ACTIVE FRONT STEERING (N63) with holder.
- Remove gearbox. See 24 00 023 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA6HP26Z) , 24 00 033 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA8HP45Z) or 24 00 023 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA8HP70Z) .
- Remove front output shafts . See 31 60 003 REMOVING AND INSTALLING/REPLACING LEFT OUTPUT SHAFT or 31 60 004 REMOVING AND INSTALLING/REPLACING RIGHT OUTPUT SHAFT .
- Remove left and right holders of front cross-strut.
Release engine wiring harness from electronics box and secure on engine against falling off.
Unlock all plugs (1) of DME control unit and disconnect.
Unlock plug on electronics box fan and disconnect.
Unlock and detach terminal strip (2).
Unlock all plugs on plug strip (3) and detach.
Unlock plug strip (3) and remove towards top.
Release screws and remove retaining bar (1).
Unlock upper section (2) of partition seal in direction of arrow and remove.
Release grommets (3) for wiring harnesses from lower section of partition seal and from electronics box.
Installation:
Make sure grommets are correctly seated so as to prevent ingress of moisture.
Open cover.
Release screw (1).
Tightening torque: 13 71 8AZ .
Remove battery positive lead (2) from battery positive connection point.
Unlock and detach vacuum line (1) from vacuum pump.
Release screws (1).
Remove DOUBLE PIPE (2).
Installation:
Replace sealing rings and moisten with refrigerant oil.
Tightening torque: 64 53 5AZ .
Unlock water pipe (1) on heater end panel and detach.
Unlock and disconnect fuel feed line (1), seal off with special tool 13 5 160.
Seal off fuel delivery line (2) with special tool 13 5 162 .
Release screws (1) on engine mount on left and right. Tightening torque: 22 11 2AZ .
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.