13 53 240 Replacing complete fuel rail (N52K)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks

Recycling

Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Unclip plug connections (1) from holder (2) and disconnect.

Unclip wiring harnesses from holder (2) and connector strip.

Remove holder (2) from fuel rail.

Fig 1: Identifying Plug Connection And Holder

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Remove protective cap from compressed air valve.

Fig 2: Identifying Protective Cap

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Connect compressed air line (1) to compressed air valve.

Blow fuel back into tank with a short blast of compressed air (max. 3 bar).

Fig 3: Identifying Compressed Air Line

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Unlock and detach fuel line (1).

Detach connector strip (2) in direction of arrow.

Release screws.

Tightening torque 13 53 1AZ .

Remove fuel rail (3).

NOTE: Modify FUEL INJECTORS only when replacing fuel rail.

Fig 4: Removing Connector Strip

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Close off fuel hose with special tool 13 5 281.

Fig 5: Identifying Special Tool (13 5 281)

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NOTE: Check stored fault message.
Delete fault memory.

Check injection system for leaks.