Do you have access to Mitchell1 Prodemand? If you are willing to share user/password (we can pay $250), please get in contact with us ASAP: email operation-charm [[at]] tuta.io or click to submit anonymously. (I know, we said we wouldn't ask any more...but it's important!)
Horn Relay: Service and Repair
REMOVAL1. Disconnect negative battery cable.
2. Disconnect horn relay from fuse box in engine compartment.