Astra L4-1.8L (2009)
3. Disconnect the wiring harness from the brake fluid reservoir.
4. Disconnect the wiring harness plug (1) from the brake fluid level sensor.
Note: Collect the brake fluid and seal the apertures.
5. Remove the brake fluid reservoir from the brake master cylinder.
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Remove the bolt (1).
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Remove the brake fluid reservoir carefully from the brake master cylinder.