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Discussion Starter · #1 · (Edited)
Hello all!

Yesterday, I drove about 15 miles then pulled up for an hour and a half, and when I drove off next I had a ‘Check Tyre Pressure: Front-Left’ warning illuminate. So I pulled into a petrol station and checked and it was about 4psi under what it should have been. I topped it up and a few miles down the road the same warning came on, so I took it to my local garage to see if I had a slow puncture. Nothing found in the tyre, so they replaced the bead seal cleared the fault. I then set all tyres to 38psi and set my tyre pressure loss indicator, then drove 70 miles yesterday evening and no faults appeared at all - great!

I switched on this morning… and before driving off this pops up: ‘Error: Tyre Pressure Loss Indicator’. I’ve checked all tyres and they’re all sitting at 38psi as I set yesterday afternoon, so I have now set the Tyre Pressure Loss Indicator and the fault has cleared (for now).

I plugged in my Carista and I received the following errors:
16777020 Instrument Cluser Fault
01275 Driver Assist Front Sensor
16388 - TPMS Display
16401 Crankshaft / Camshaft Position Correlation Sensor B

Has anybody experienced this or able to shed some light before I get this looked at by my local VW specialist garage?

I do not have TPMS.

Thanks in advance!
 

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Once you've topped up the pressure have you done the 'reset'?
It won't know until you have
Font Parallel Screenshot Number Document
 

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Can I ask does this cancel off after you have driven a few miles.

I also find when the temperature drops the rims are cold and get this issue, once I have checked the pressure and all is good I find once I have driven a few miles and the rims warm up and the pressure gauge in the rim has warmed the issue goes.

Just a thought.
 

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I had a similar problem. Yellow tyre sign and NS front showed low. Checked with metal measure. It was correct. All tyres OK.
There is no SET button on a Elegance. So I went through the options. Standard, comfort etc and it has been ok .
A bug I think.
 

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Pressure drops at lower temperatures. A run will warm the tyres and pressure is restored. It’s the same physics that lets you get more fuel in your tank in winter.
 

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Discussion Starter · #7 ·
So the saga continues... after the same 'Error: Tyre Pressure Loss Indicator' illuminated again, I checked all tyre pressures manually and all were fine. So I set the tyre pressures again and the warning cleared. I then drove 15 miles or so, parked up for an hour and a half, turn on and the same error comes on once again. Checked all pressures and all are fine.

Plugged in my Carista and there is one fault detected:
ABS - 16388: Fuel Volume Regular Control, Circuit High

Interestingly, the garage that I have booked my car in with said that the Tyre Pressure Sensor is built into the ABS Sensor on my model... but what does the ABS have to do with the Fuel Volume Regular Control?
 

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So the saga continues... after the same 'Error: Tyre Pressure Loss Indicator' illuminated again, I checked all tyre pressures manually and all were fine. So I set the tyre pressures again and the warning cleared. I then drove 15 miles or so, parked up for an hour and a half, turn on and the same error comes on once again. Checked all pressures and all are fine.

Plugged in my Carista and there is one fault detected:
ABS - 16388: Fuel Volume Regular Control, Circuit High

Interestingly, the garage that I have booked my car in with said that the Tyre Pressure Sensor is built into the ABS Sensor on my model... but what does the ABS have to do with the Fuel Volume Regular Control?
Very strange, did you try clearing the fault to see if it came back and if your other issue with the tyre monitor goes.
 

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OK, so you don't have a tyre fault, but something else. This system Measures wheel rotation using ABS sensors and flags if one is rotating at a significantly different rate. Being warm or cold makes no difference, it's rotations not actual pressure. So, with the other errors it could be low battery causing logic problems, or a control module failing, or another seemingly irrelevant sensor that's actually faulty.
 

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Discussion Starter · #10 ·
Very strange, did you try clearing the fault to see if it came back and if your other issue with the tyre monitor goes.
Yes - I have cleared the fault with Carista and it’s come back on since. The same issue with the tyre monitor has come back on.
 

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Discussion Starter · #11 ·
OK, so you don't have a tyre fault, but something else. This system Measures wheel rotation using ABS sensors and flags if one is rotating at a significantly different rate. Being warm or cold makes no difference, it's rotations not actual pressure. So, with the other errors it could be low battery causing logic problems, or a control module failing, or another seemingly irrelevant sensor that's actually faulty.
I’m beginning to believe the same - it’s flagging it up as a tyre fault, but it’s actually another fault in the system. Here’s hoping for a cheap fix, but I doubt it! I already had an ABS Sensor replaced less than 2 years ago, so if it’s the same one it should be replaced under a 2 year parts and labour warranty 🤞🏼
 

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Discussion Starter · #12 ·
It’s been at my trustworthy independent German cars specialist garage today and the wheel bearing is cracked, so a new wheel bearing and ABS sensor should solve the problem. That’s now both of my front wheel bearings replaced in 76000 miles…
 
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