My dear longtime mechanic just retired, and I went to a new mechanic. I showed the new mechanic the battery cutoff switch my old mechanic had installed, and the new mechanic said he would have to charge me extra to work around it. When I got the car back, the switch didn’t work anymore. I’m writing this thread to ask people’s advice on how to deal with this, if at all. My old mechanic put the switch in because when I purchased the Prius used, the Toyota dealership who looked it over for me warned me that this particular car needed to be run regularly. It wasn’t driven for years by the prior owner. This posed an issue for me because I travel a lot, and the battery kept draining. Since my old mechanic installed the switch, I haven’t had any issues - except when the pandemic hit and I forgot about my car completely and the battery drained. When I met the new mechanic, I showed him the switch, and he said he would have to charge me extra to inspect the battery because of the switch. When I got the car back with a new battery and noticed the switch didn’t work, I also noticed a wire in the trunk. I came back to the new mechanic, and he blamed the switch, my old mechanic, and he tried, but he could not fix it. He said that wire was old and served no purpose so he took it out, but my old mechanic didn’t make mistakes like leaving an extra wire inside the car. The new mechanic said he’d be willing to buy me a new switch, but that he won’t install it because he thinks it’s a bad idea to have one at all. His tone came off as arrogant to me. He kept trying to get me to run my mouth so that he could get me to say something he could use to defend himself. He also pretended he couldn’t hear me through my mask when it suited him to do so. I stayed calm and left. This is what I want to ask him for in writing, and please chime in. However, please be nice. Like many of you, I have been under a lot of stress and know people who have gotten sick and died recently. I want to show the new mechanic the receipt from my old mechanic and ask him to pay me what my old mechanic charged me to install the switch. I also want the new mechanic to refund the surcharge that he charged me for having to work around the switch. Thank you for having read all fo this, and for any (kind and fair) advice.