17 22 010 Removing and installing/replacing transmission oil cooler for automatic transmission (230i and 230i xDrive coupe/convertible)

Necessary preliminary work: 

• Refer to DRAINING HIGH-TEMPERATURE COOLANT .
• Refer to REMOVING AIR INTAKE PLENUM .
• Remove reinforcement plate. (All-wheel drive vehicle) 
• Refer to REMOVING REAR UNDERBODY PROTECTION .

Recycling 

Catch and dispose of drained coolant in a suitable collecting vessel.

Transmission oil emerges when fluid lines are detached from transmission oil cooler.

Catch and dispose of escaping transmission oil in a suitable container.

Observe country-specific waste disposal regulations.

Removal: 

Loosen the screws along the arrows.

Remove connecting rod (1).

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Unlock and release fuel line (1).

Unlock and release clamp (2).

Unscrew nut (3).

Remove guard plate (4).

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Unlock coolant line (1) and release.

Collect and dispose of escaping coolant.

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Unlock transmission oil lines (1) and release.

Unlock coolant line (2) and release.

Loosen screws (3).

Release screw (4).

Remove heat exchanger (5).

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Installation: 

Install heat exchanger (5).

Tighten screw (3).

Tightening torque 17 22 2AZ .

Tighten down screws (4).

Tightening torque 17 22 2AZ .

Connect and lock transmission oil lines (1).

Transmission oil lines (1) must audibly engage.

Connect coolant line (2) and lock.

Coolant line (2) must audibly engage.

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Connect coolant line (1) and lock.

Coolant line (1) must audibly engage.

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Install protective plate (4).

Tighten nut (3).

Connect and lock fuel line (1).

Connect clamp (2) and lock.

Clamp (2) must audibly snap into place.

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Install connecting rod (1).

Tighten screws along arrows.

Tightening torque 12 41 2AZ .

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Required follow-up work: 

• Refer to INSTALLING INTAKE PLENUM .
• Refer to TOPPING UP HIGH-TEMPERATURE COOLANT .
• Refer to CHECKING OIL LEVEL in automatic transmission. If necessary, top up automatic transmission fluid.
• Install reinforcement plate. (All-wheel drive vehicle) 
• Refer to INSTALLING THE REAR UNDERBODY PROTECTION .