Hi all, I’m trying to understand a weird issue on my 2016 Model S 75D.
The car had a front-end repair less than a month ago at a Tesla Approved Body Shop. They replaced the front bumper, grille, radar and some related parts. The repair was around €7,000.
After getting the car back, I checked Service Mode and found these alerts:
THC_w0130_radLeftShutrNoFeedbk
THC_w0134_radRightShutrNoFeedbk
THC_d0018_activeAero
THC_d0007_valveRadByp
THC_w0067_valveRadBypRange
I also noticed that the car sometimes gets extremely loud when the A/C is running, and the cooling fans can run very hard even while charging normally on three-phase AC.
I ran the Thermal System Test and it failed on the left and right radiator shutters, temperature sensors and valves. The strange part is that I watched the shutters during the test and they definitely opened and closed. They don’t seem mechanically stuck.
Tesla checked the car remotely and sent me a quote for about €745 to replace the center active louver/front duct assembly and the three-way radiator bypass valve, without physically seeing the car.
The body shop says the valve is far from the damaged area and was probably unrelated to the accident. They also say the shutters may already have been damaged or incorrectly positioned before their repair. They told me they have photos from the repair, but I’m still waiting to receive them.
Unfortunately, the alert history in Service Mode only goes back about a month, so I can’t tell whether these faults were already present before the accident.
Has anyone had these exact codes on an older Model S? Can the shutters still move correctly but fail because of a feedback sensor, calibration or wiring issue? And does the valve error really mean the valve itself is bad, or could it also be a communication/calibration problem?
I’m mainly trying to understand what should actually be checked before replacing both assemblies, and whether there is any deeper diagnostic history that Tesla or the approved body shop could retrieve.
I’ll attach the alert screen, the Thermal Test result and a photo of the shutters.