i heard you have to by a special scanner for these types of systems what years of 850's are they on or are they on all of them or just turbos and how much is the scanner and is the obd I system more easier to use because it already got the selector cable and what 850 models are they on or is the scanner really that expensive, and our 850 turbos more of a hassle to deal with than 850 glt models when it comes to repair cost and if you were buying a used volvo would you prefer a glt or turbo model based on your own experience
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