Ig­ni­tion switch

Car Mechanics (UK) - - Help! -

Q On my wife’s 2006 Vaux­hall As­tra, the ra­dio stays on and the chime when you open the driver’s door sounds af­ter re­mov­ing the ig­ni­tion key. I am led to be­lieve this is a com­mon fault and have re­moved the ig­ni­tion bar­rel and taken it apart to clean and lu­bri­cate it. When I had the bar­rel out, I pushed down on the plunger/switch that sits in the bot­tom of the bar­rel hous­ing, which was free to move, but the ra­dio stayed on and the chime still sounded what­ever po­si­tion the plunger was in. Is there a re­pair for this or do you have to re­new the com­plete ig­ni­tion hous­ing? Craig Christie

A When the key is re­moved from the bar­rel, it should move the plunger in the ig­ni­tion switch to dis­con­nect the an­cil­lary cir­cuit which con­trols, among other things, the ra­dio. Nor­mally re­mov­ing the ig­ni­tion bar­rel, en­sur­ing ev­ery­thing is free and check­ing the plunger is not bro­ken, should rem­edy the prob­lem. As you have re­moved the bar­rel and con­firmed that there are no prob­lems in this area, then it does sound as though you will need a new ig­ni­tion switch. This should be avail­able sep­a­rately from the lock assem­bly (part num­ber 90505912), but you will need to con­firm this with your Vaux­hall parts depart­ment.

The elec­tri­cal part of the ig­ni­tion switch.

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