Hi,
If the negative battery cable is loose and can't be properly tightened, it should be replaced. However, if both came on, there may be an issue with the steering angle sensor.
What you should do at this point is to have the can-bus scanned to determine if there are any diagnostic trouble codes. If the lights were on, there should be something stored.
CAN stands for controller area network. Basically, the different modules in the vehicle are tied together via a few wires so they can communicate back and forth. This type of scan will retrieve codes regardless of the module storing them.
Here is a link that shows how it's done:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
Let me know if that is something you can do or have done. If not, when the lights are on, stop at a local parts store and ask if they can scan the computer for you. Although they have a basic scan tool in most cases, it may still show the cause.
Let me know.
Joe
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Saturday, April 27th, 2024 AT 8:58 PM