Anyone that parks your car in a garage, look it over very well for mice infestation. Over the years I have worked on many cars with chewed wires. Almost always under the floor carpet. Some under the top engine insulation cover. The top of the fuel pump is another awesome location. All cars with chewed wires have some of the following, misfire codes, check engine light on, no crank over, crank over no start, poor drivability to various internal modules not working. The tech always spends hours diagnosing the issue.
We never start off with, "you got mice". Having a code is very helpful and a starting point. I have seen computer modules installed that did not help. Now you really have to start looking. This is not any easy thing to diagnose. After trying the easy stuff, remove the seats and carpet looking for shorted wire damage. The first pic is from a 2022 XC60. The mice were under the carpet and chewed thru CAN network wires and other wires on the pass side. The customer contacted their insurance company who is now involved in this repair. 99% of the time we just cut/solder in a new piece of wire and go from there. We never had a problem with the car after the wire repair. This insurance company wants the complete body harness replaced from the front to the back. I get that the insurance company needs to protect their butt. It will be 3 months or more for Volvo to make a harness. All wiring harnesses are made by hand on a wall board. It takes that long; I do not know why. Each harness has to be ordered by VIN and made. We needed one for a 2017 XC90 2 years ago, it took 4 months to get that harness. Here is the other thing, labor time. The complete interior has to be removed. Seats, carpet, side panels, headliner ect. Remove the old harness while installing the new harness. It takes time to just route the new harness disconnect/reconnect every connector. We quoted a price for labor that the insurance company does not like. Everything is on hold until we can agree on a labor price. Do not let this happen to you. Mice proof your garage or give them a better home, in your garage than your car.
2nd pic, from a fuel pump nest. Chewed thru wires and plastic nipple setting an evap code.
Last 3 pics, 2013 XC60, left rear seat area, chewed wires, communication codes.
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We never start off with, "you got mice". Having a code is very helpful and a starting point. I have seen computer modules installed that did not help. Now you really have to start looking. This is not any easy thing to diagnose. After trying the easy stuff, remove the seats and carpet looking for shorted wire damage. The first pic is from a 2022 XC60. The mice were under the carpet and chewed thru CAN network wires and other wires on the pass side. The customer contacted their insurance company who is now involved in this repair. 99% of the time we just cut/solder in a new piece of wire and go from there. We never had a problem with the car after the wire repair. This insurance company wants the complete body harness replaced from the front to the back. I get that the insurance company needs to protect their butt. It will be 3 months or more for Volvo to make a harness. All wiring harnesses are made by hand on a wall board. It takes that long; I do not know why. Each harness has to be ordered by VIN and made. We needed one for a 2017 XC90 2 years ago, it took 4 months to get that harness. Here is the other thing, labor time. The complete interior has to be removed. Seats, carpet, side panels, headliner ect. Remove the old harness while installing the new harness. It takes time to just route the new harness disconnect/reconnect every connector. We quoted a price for labor that the insurance company does not like. Everything is on hold until we can agree on a labor price. Do not let this happen to you. Mice proof your garage or give them a better home, in your garage than your car.
2nd pic, from a fuel pump nest. Chewed thru wires and plastic nipple setting an evap code.
Last 3 pics, 2013 XC60, left rear seat area, chewed wires, communication codes.
