How do I train a buyer to troubleshoot my car wash’s tunnel controller?

Start by writing down the faults you have solved by heart. For each one, note the symptom, the likely cause, the first thing you try and what you leave to a technician. Add the settings you change seasonally and any adjustments that keep cars flowing smoothly. Photograph the controller screens and the wiring cabinet, and label what is not obvious.

Then teach by doing. Walk the buyer through a startup, a normal run, an emergency stop and a restart. Let them trigger a known fault safely while you watch, so they build confidence rather than just reading a binder. If you have staff who handle small problems, include them in the sessions, since they will hold the knowledge when you are gone.

Gather the manuals, the controller manufacturer’s support contact and the name of any technician you rely on, and offer to introduce them. Record which settings are backed up and where. Agree in the sale terms how long you will stay available for questions after closing. Ask your lawyer to put that support period in writing, and ask your accountant whether any payment for it should be handled separately.

Key takeaways

• Write down each recurring fault, its symptoms, your first check and when to call a technician.
• Teach on the live equipment, including a safe fault, an emergency stop and a restart.
• Hand over manuals, backups and technician contacts, and agree a support period in writing.