Disconnected Plug Under Rear Passenger Side Door (And 'corroded&#3

[Un0riginal]

Hi,

 

Wonder if anyone would be able to help.  When I had the car over the pit yesterday (garage failed it on corroded brake pipes, so I was having a look but they don't look that bad to me, just needed a wipe down :S) I noticed this disconnected plug and was wondering if anyone might be able to tell me what it is and if I should reconnect it.

 

 

On the Brake pipes this is one side before I have wiped them down (forgot to take after pics)

 

 

Any help would be great.

 

Thanks

 

**Edit**

Oops, should have checked my title didn't overrun the the character limit.  Should read (And 'corroded' brake pipes)

 

Oh, and probably should have put a bit more info about the car, Galaxy 1.9TDi, 06 plate but is the model that seemingly finished 05 (think mk2?)

Edited June 26, 2013 by Un0riginal

[seatkid]

Disconnected plug is for the booster or auxialliary heater - possibly disconnected because it has a problem - usually the glowplug - and would belch out white smoke if reconnected (in cold weather) - see FAQs for information on fixing the booster heater.

 

Eurrgh! those brake pipes are very badly corroded and I'm not surprised they failed the MOT! Disturbing amount of corrosion for a 2006 model - has it been driven around in the sea or something?

[Un0riginal]

After I wiped them down though they looked fine, just stone chips etc into the plastic coating.  I will take another pic when I get home tonight.

 

No sea driving :)  But up until recently where we were living required driving through quite deep puddles whenever it rained, so the underside would have got soaked regularly.

Edited June 26, 2013 by Un0riginal