TPMS reset

[CatmanV2]

So. TPMS goes off last week with a 0.1 bar drop OSF tyre. Pumped and checked them all at the weekend.

Will the damned thing reset? Will it ****. How far do you have to bloody drive?

I know the manual states 'The vehicle may need to be driven for up to 20 minutes above 24 km/h (15 mph) in order for the TPMS to acquire and process the updated information.' but I'm sure I did that. Anyone know if you can force a reset? My AP-200 lets me turn the light off but the sensor still shows red in the display and the light comes back on restart.

</rant>

C

 

[conaero]

The batteries in the TPMS senders in the wheels have about a 10 year max life. Connect to diagnostics and read what the battery percentage is of each sensor then go from there.

10% or less and you're changing them.

 

[CatmanV2]

The batteries in the TPMS senders in the wheels have about a 10 year max life. Connect to diagnostics and read what the battery percentage is of each sensor then go from there.

10% or less and you're changing them.

Ahh, cheers. It's still reporting different pressures, but I can check. Be a bit ticked as I had the tyres changed recently(ish)!

C

 

[CatmanV2]

Hmm, so AP-200 doesn't seem to give me percentages but does report:

Sensor 2 low battery[ Tire Pressure Sensor 2 Data (Right Front) ] No

On all tires.

That was with ignition off and engine on.

I wonder if it needs to be moving to wake the sensors given they were all reading 0.0kPa

C

 

[spkennyuk]

Hmm, so AP-200 doesn't seem to give me percentages but does report:

Sensor 2 low battery[ Tire Pressure Sensor 2 Data (Right Front) ] No

On all tires.

That was with ignition off and engine on.

I wonder if it needs to be moving to wake the sensors given they were all reading 0.0kPa

C

I dont know on your car Chris but on the Merc C class the car needs to be moving before the tpms will detect the new air pressure after inflation.

I would imagine there is a small delay before the system is live to allow tyre pressures to stabilise when you start driving.

On a frosty morning all your tyres would probably trigger low pressure if there wasnt a delay built in.

 

[conaero]

Hmm, so AP-200 doesn't seem to give me percentages but does report:

Sensor 2 low battery[ Tire Pressure Sensor 2 Data (Right Front) ] No

On all tires.

That was with ignition off and engine on.

I wonder if it needs to be moving to wake the sensors given they were all reading 0.0kPa

C

There you go

 

[CatmanV2]

There you go

Sorry? I'm reading that as 'Low battery: No' They are all saying the same.

I dont know on your car Chris but on the Merc C class the car needs to be moving before the tpms will detect the new air pressure after inflation.

I would imagine there is a small delay before the system is live to allow tyre pressures to stabilise when you start driving.

On a frosty morning all your tyres would probably trigger low pressure if there wasnt a delay built in.

Yeah, it has been moving though. Taking it to Feli tomorrow for a check over so maybe it'll clear then. There's all sorts of figures for pressure and temperature compensation as well as hysteresis figures. I've not tried to dig in as I'm *pretty* sure it's working properly (possible battery issues not withstanding), I just want the light to go away


C

 

[spkennyuk]

Sorry? I'm reading that as 'Low battery: No' They are all saying the same.



Yeah, it has been moving though. Taking it to Feli tomorrow for a check over so maybe it'll clear then. There's all sorts of figures for pressure and temperature compensation as well as hysteresis figures. I've not tried to dig in as I'm *pretty* sure it's working properly (possible battery issues not withstanding), I just want the light to go away


C

There is a lot to be said for the indirect TPMS system. No sensors in the wheels, no rogue warning from failing sensors. No parts to replace or risk getting damaged when you have your tyres changed. No more having to code sensors to the car when you had to change any.

 

[CatmanV2]

There is a lot to be said for the indirect TPMS system. No sensors in the wheels, no rogue warning from failing sensors. No parts to replace or risk getting damaged when you have your tyres changed. No more having to code sensors to the car when you had to change any.

Yeah. I don't normally mind them. I just don't like lights on the dash (especially when the pressure is so obviously correct)

C

 

[CatmanV2]

Round this off: Auto Alfa solution:

Pump the damned things up to about .6 bar above what I wanted and drive them. The journey home was 'interesting'
Deflated to something more reasonable this evening and all looks good.

C

 

[allandwf]

I didn't like the jumped up Kwak Fat supervisor, so I asked him why he returned my car with four alarms up, one for each tyre. " Basically you throw four tyres on then just leave them all in alarm." Asked him to clear them, he didn't know, and the young lad came out and then told him it needed driven. I left chuckling.