430 TPS or TPMS ECU Failure

I have a "service" tire warning on my dash, notwithstanding that all tires are properly inflated. This pertains to my '07 F430 with assembly no. 71276.

So, how can I determine if the the error relates to a failed tire pressure sensor (TPS) or a failed Tire Pressure Management System ECU (TPMS ECU)?

Thanks!

Jason

 

Manually gauged all tires at 35psig. The digital display does not show any readings other than the "Service" tire message. Pressing the Recalibrate button does nothing. I've got a Launch OADD-PO0705A diagnostic tool that I'll hook-up to see if it will identify the problem.

Jason

 

I'll report my findings tomorrow.

Jason

 

So, I connected my LAUNCH diagnostic tool and did not detect any error codes specific to the TPS system.

I did, however, discover the following: DIGITEK Instrument Cluster Fault I 2. Digging deeper the tool says: No CAN Message received from TPMS ECU.

Since the car was not moving, I don't think messages would be generated by the TPMS ECU, but that's strictly a guess. Perhaps I should drive the car with the LAUNCH connected and to see if the message changes?

I'm now thinking about disconnecting the TPMS ECU, if I can find it, and to see if the tire service warning goes away.

Thoughts and or suggestions anyone?

Jason

 

I seem to have run a health check with my LAUNCH tool but didn't see any codes. I'll try again tomorrow and report my findings.

Notably, there appears to be some sort of onboard diagnostic program that runs when you turn on the ignition. I get an "OK" message followed soon after with a "Service" tire message.

Jason

 

I'm not sure how old my TPS' are as I purchased the car in September of last year. However, the date code on my tires (29 week of 2019) suggests that the sensors are nearly six (6) years old. I can't imagine all the batteries going dead at the the same time. And I thought if at least one sensor was working the dash display would show the pressure in that particular tire. My display shows nothing but the tire service warning.

But maybe if one sensor has a battery failure it triggers an across-the-board tire service warning?

Does anyone have know what shows up on the tire message screen if only one sensor becomes inoperable?

Jason

 

I've attempted to calibrate the tire pressure sensors and no joy.

Jason

 

EPILOGUE

Thank you, Bill, for letting me know what happens if a single sensor fails.

I was curious to know what messages might be displayed on my Scan tool and on the dashboard message center if I removed the TPMS ECU. So, I removed the ECU and also removed the circuit board from the ECU to inspect it for any signs of failure/damage.

While the ECU was disconnected, I ran the scan tool and checked the dashboard message center, but nothing had changed. Also, there were no signs of damage to the ECU circuit board, so I reassembled the ECU and installed it back in its home behind the brake pedal.

I then turned the ignition switch to the "run" position and much to my surprise and delight, the "service" tire warning was no longer being displayed on the dashboard instrument message center.

WOW!

I then cycled through the TPMS and all four tires showed 35psig!

In conclusion, everything works for now, but I have no idea what I did to fix it other than disconnecting and reconnecting the TPMS ECU.

I'm beginning to think that I'm not cutout for Ferrari ownership as I've had way too many problems with this F430 in less than a year of ownership. Perhaps I should trade if for an air-cooled Porsche!

Anyway, thank you all for your contributions toward solving my latest problem!

Jason

 

Thanks for that, Flash.

Notably I don't have a quick battery disconnect switch in the frunk; mine's an '07 F430.

Also, my Scan tool had this message relative to the TPMS when trying to connect yesterday and today before the system started working: If TPMS was once used with other devices, enter BlueTooth configuration option of the other devices system setup program and cancel the BlueTooth paring of this TPMS TSGUN. Otherwise the TPMS may not be found.

I'll try to connect the scan tool again tomorrow now that the TPMS is working and see if I can see "live" data.

Jason

 

Hmm, I've stripped all the carpeted panels from my frunk and didn't see anything that resembled a bolted switch.

Where is it located, and I'll look again.

Jason

 

It appears that sometime during MY '07 Ferrari deleted the battery cutoff switch from the frunk in the F430. Mine clearly has no such switch, conventional or bolt-switch.

I also removed the carpeted panels in search of a switch but came up with nothing.

Jason

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Notably, my air pump bag is not as shiny as it appears in the pic. I think the flash from my camera highlighted the sheen.

Jason