Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
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Ok you have c70 what you will have to do now again re calibrate roof again and install upgrade software for roof module what happens whit time hydraulics don't hold pressure and require 1-2 a year calibration that should be done every service included but most techs forget to do or don't even do it if you did not complain or had problem . Also it can broken internal cylinder or bad pump module but that is more rare problem
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no not even regular garage can do it all the new cars require this special software and calibrations and for small shop is not worth buying all that you only option to do right is volvo garage