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My aero is coming up for its second service since I've had it ( I have em evry 6000 miles). The ACC is fine but I read somewhere they need an annual service to include weighing the coolant.. Might this be an avoidable expense if all is well or do you(S) think I should do this to avoid future problems. I use BPV in Slough who thus far I am delighted with ( no bullshit, plenty of time to talk and reasonable prices)

Thanks

Julian
 

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Julian,
I have had mixed feedback on this from Saab garages. Some say the Air Con system is sealed and needs no maintainance unless fluid level has dropped. Others recommend a service (sounds dubious to me though!).
Others views on this much appreciated...

However, you can check the fluid level in the system by looking at the 'spyglass' on the side of the pump (faces up, and located about 12 inches back from windscreen washer bottle, under bonnet). The check goes something like this: Run engine and Air Con: If there are no bubbles running past window (spyglass) then system full = OK. If lots of bubbles = could do with top up of fluid. If no bubbles, and no cold air when aircon on (i.e. does not dehumidify on ACC units) = then pump about to cease up and no fluid in system!!!

Like others on this BB, my view is, if it works, and ain't broken, don't fix it... unless of course the ACC really is a serviceable item. Definately check Aircon fluid level though.
 

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My local specialist has the correct equipment for checking A/C systems and yes it does measure the weight of the gas when topping up. It did cost a few thousand pounds, but gives him the chance to correctly fill the systems up, after changing heater matrix's etc.
Nick.
 

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I have been told by my independent Saab garage in Tonbridge kent who are exellent that the air con should be left on all year and be serviced every 12 months - £50 - 60.

Over the period of a year the system will naturally lose gas, which makes the compressor work harder. Having it running all the time will also prelong the life on the compressor.
 

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Just noted my handbook section on A/C states system should be serviced annually by Saab dealer. Which begs the question why don't they include an A/C service in the standard 12 month service - or at least advise when gas/fluid (depends on temp, etc) level needs topping up, based on compressor viewing window?? Hummm!

The A/C pump should definately be run once a week as a minimum, to help keep it free and the pump lubricated. Full time running will lower mpg but by about as much as driving with the window open, apparently.
 
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