The average cost of carwash equipment depends on the carwash services you intend to offer. Typically, the cost for a self-service carwash bay is between $8,000 and $10,000. For an automatic carwash bay, equipment costs range between $31,000 and $100,000. All in all, see below an example of the total startup cost to start a car wash business:. If the car is unlocked, the water pressure will open the charge port if you spray it directly. You can lock the car to prevent this or use the car wash mode...or just spray around it. $5 and about 10 mins each week no issues. RHinCT, JerseyShoreMY, Trip McNealy and 2 others. Owners and approved technicians can monitor, make changes, collect all wash information, test individual components, trouble-shoot and diagnose car wash performance. The Screen Access System is the industry's only true two-way communication system.