S2K JDM

Just got my car back and they told me to remove my Sirius S50 unit and alarm system. They said that it may be causing the problem. Then when i return the car after removing the alarm they said they might charge me if they find out its it related to the alarm or the Sirius.

I have been installing alarms for years i dont see how it would cause this problem. Especially the Sirius unit, it only connected to the car with the cig lighter. i have a bad feeling when i return my car they are gonna end up charging me for no reason.