As part of my glow plug fault one of the suspected problems could be the glow plug relay so thought I would replace it. I manged to find one on ebay and the part number is

09 132 691 or 09132691

1, First locate the glow plug relay which can be found attached to the battery tray

2, To remove simply slide in an upwards direction (don’t pull to hard as there are wires attached)

3, At the bottom of the connector you will see a push clip simply push this in an wiggle/pull the connector/heatsink until they come apart

4, Insert replacement ensuring correct pin alignment

5, Slide back onto battery holder