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Tyre Pressure Monitor

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Tyre Pressure Monitor Empty Tyre Pressure Monitor

Post by Richard G on Tue Aug 11, 2020 11:32 pm

Have a warning light showing tyre pressure osf front tyre low pressure.  Checked all pressures all ok.  Driven some miles and light wont go off. Manual says nothing about reset only that the dust caps do the monitoring. Take them off but no change.

Any suggestions?

RG

Nuevo 2015
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Tyre Pressure Monitor Empty Re: Tyre Pressure Monitor

Post by Cymro on Wed Aug 12, 2020 8:18 am

RG: you might care to read through this thread. Have a coffee ready....


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Post by gef on Wed Aug 12, 2020 12:33 pm

The easiest  way is to re inflate the tyre to just over the piller amount this will cancel the warning light
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Post by Caraman on Wed Aug 12, 2020 4:57 pm

gef wrote:The easiest  way is to re inflate the tyre to just over the piller amount this will cancel the warning light
gef - I see like me have a 2019 model.  Do you know at what pressure the TPMS triggers on the front tyres?  I have dropped my front pressures from 5.0 bar to 4.0 bar and it hasn't triggered yet.  4.0 bar is 58 psi.  I want to get it lower than this.  Presumably, you have experience of clearing the warning light.  In your experience will inflating the front tyre to say 5.1 bar do the trick and how quickly does it clear?
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Post by Richard G on Wed Aug 12, 2020 5:23 pm

I have set mine now to exactly what it says on plate , probably need to drive out to check it. Dash still shows fault. 

I would not worry about it but Mot expires end of month and tax at same time.
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Post by Caraman on Wed Aug 12, 2020 5:32 pm

Richard G wrote:I have set mine now to exactly what it says on plate , probably need to drive out to check it. Dash still shows fault. 

I would not worry about it but Mot expires end of month and tax at same time.
Notwithstanding Cymro's experience I understand that re-inflating and then driving for a fair distance does the trick but I have no experience of it.  If I continue dropping my front tyre pressures to get them closer to the ETRTO/Continental recommended level I expect I will find out.  Of course your 2015 model may not be the same as my 2019 model in this respect.  I am hoping gef will cast more light on this.
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Post by gef on Wed Aug 12, 2020 5:46 pm

Yes caraman exactly as soon as you go over it will clear just keep inflating until  the light goes out
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Post by Caraman on Wed Aug 12, 2020 6:00 pm

gef wrote:Yes caraman exactly as soon as you go over it will clear just keep inflating until  the light goes out
Thanks gef.  So it clears without actually taking it on the road.  Does the engine have to be running or is having the ignition on enough?
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Post by gef on Wed Aug 12, 2020 6:11 pm

The only way to adjust the high and low is to give Peugeot  cash to have the limiters changed but they may want you to sign a disclaimer!
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Post by gef on Wed Aug 12, 2020 6:18 pm

All I did with mine was to have ignition on to show warning but garage indicator was not good you just need to go over a bit
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Post by Caraman on Wed Aug 12, 2020 6:24 pm

gef wrote:The only way to adjust the high and low is to give Peugeot  cash to have the limiters changed but they may want you to sign a disclaimer!
None of my three not so local Peugeot Boxer dealerships will do it as Auto-Sleepers, unlike for example Bailey, hasn't fitted a new Stage 2 conformity tyre pressure label on the passenger door pillar indicating different front tyre pressures to the current and ridiculous 5.0 bar front on Peugeot's Stage 1 label. Peugeot had no way of knowing what the front axle mass of the converted vehicle would be and therefore its tyre pressure so the Stage 1 label is useless.

Have you been able to get your TPMS trigger point adjusted?
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Post by Mike187 on Wed Aug 12, 2020 9:08 pm

Richard G wrote:I have set mine now to exactly what it says on plate , probably need to drive out to check it. Dash still shows fault. 

I would not worry about it but Mot expires end of month and tax at same time.

The most likely cause of that is the battery needs replacing, unfortunately that means taking the tyre off the wheel.

Mike

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Post by Mike187 on Wed Aug 12, 2020 9:23 pm

Caraman wrote:
gef wrote:Yes caraman exactly as soon as you go over it will clear just keep inflating until  the light goes out
Thanks gef.  So it clears without actually taking it on the road.  Does the engine have to be running or is having the ignition on enough?

They usually have a movement sensor so they shut down when the wheel is not rotating to save battery power. Thought you might find that putting air in the tyre might cause enough vibration to wake the sensor and start It transmitting.

Mike

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Post by Caraman on Thu Aug 13, 2020 7:32 am

Mike187 wrote:

They usually have a movement sensor so they shut down when the wheel is not rotating to save battery power. Thought you might find that putting air in the tyre might cause enough vibration to wake the sensor and start It transmitting.

Mike
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Post by Caraman on Thu Aug 13, 2020 10:53 am

Caraman wrote:
Mike187 wrote:

They usually have a movement sensor so they shut down when the wheel is not rotating to save battery power. Thought you might find that putting air in the tyre might cause enough vibration to wake the sensor and start It transmitting.

Mike
Thanks
is it possible that the sensor battery drains more quickly when the TPMS is triggered?
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Post by Mike187 on Thu Aug 13, 2020 11:39 am


is it possible that the sensor battery drains more quickly when the TPMS is triggered?

I wouldn’t have thought so, it’s my understanding that the sensor is just transmitting the the tyre pressure and temperature at set intervals, it’s the receiver that compares that against the parameters that have been set for that tyre and if outside those parameters triggers a warning.

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Post by Richard G on Thu Aug 13, 2020 10:32 pm

Spoke to a MOT tester i know, TPMS is checked from 2014/2015 onwards. Sensors apparently last about 5 years.  Can buy replacements and clone the serial numbers or re-programme vehicle to new one.

ATS and National tyres offer a check and repair service, I am doing the rounds tomorrow will report back.

I will only replace the 1 but no doubt the others will follow, and every 5 years!
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Post by Paulmold on Thu Aug 13, 2020 10:40 pm

I've read on another forum that latest AS van conversions are not fitted with tpms.

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Post by Caraman on Fri Aug 14, 2020 7:25 am

Paulmold wrote:I've read on another forum that latest AS van conversions are not fitted with tpms.
A member on this forum in another thread reported that his new PVC didn't have one which surprised me and him.  A-S currently show a TPMS as part of the base vehicle spec on their website for the Nuevo and Broadway but not any of their other models.  I don't know if this is significant.  Jef has a 2019 PVC and clearly has it.  TPMSs are a good thing providing they are adjusted to trigger at the right pressure which mine and many others are not because A-S hasn't bothered to have it adjusted by Peugeot to match the correct pressures for the converted vehicle's front axle mass.


Last edited by Caraman on Fri Aug 14, 2020 7:27 am; edited 1 time in total (Reason for editing : typo)
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Post by Mike187 on Fri Aug 14, 2020 10:29 am

I checked earlier when I first heard about it.

Class M1 (cars, passenger vehicles up to 8 seats) TPMS introduced on new type approval in November 2012 and all new registration in November 2014.

Class N1 (vans up to 3.5 tonnes) not mandatory but if fitted must comply with regulations.

A faulty TPMS is a major fault according to the to the MOT testers handbook
if fitted on a M1 vehicle registered on or after 1st January 2012

My van is M1 according to my V5

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Post by Richard G on Fri Aug 14, 2020 12:48 pm

Acording to my Autosleeper handbook..(page 8- 1) refers to Maximum Technically Permissible Laden Mass.............is unaffected by the Autosleeper conversion. from this it seems to follow that manufactures tyre pressures therefore unaffected?


Got mine booked in anyway for "TPMS" check next week
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Post by Caslon on Fri Aug 14, 2020 2:00 pm

Just another thought, when the tyres need to be changed, at the high pressures steel valve inserts are recommended, but which ones to use as the tpms attached to the valve may not fit the new valve, or are they standard to fit ant tpms?
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Post by Caraman on Fri Aug 14, 2020 2:44 pm

Richard G wrote:Acording to my Autosleeper handbook..(page 8- 1) refers to Maximum Technically Permissible Laden Mass.............is unaffected by the Autosleeper conversion. from this it seems to follow that manufactures tyre pressures therefore unaffected?


Got mine booked in anyway for "TPMS" check next week
The Peugeot Stage 1 tyre pressure label for the unconverted vehicle and the Peugeot handbook states that the pressures shown are fully laden pressures.  If fully laden means a front axle mass of 1850 kg which is its MTPLM, I can guarantee you are no where near that mass.  The NCC which is the UK motorhome trade organisation states: all vehicles are plated with the tyre pressure for the maximum load that the vehicle can carry and it will be the drivers’ responsibility to vary this pressure if they wish to use the vehicle in an unloaded condition. The DVSA states: the tyre manufacturer is best placed to suggest what pressures are acceptable and these should not be exceeded unless on specific advice from them.  When I measure the front axle mass of my fully loaded Nuevo EK it is always less than 1425 kg - in fact significantly less - and for this mass Continental using ETRTO figures recommends my front tyres should be inflated to 3.0 bar and most definitely not 5.0 bar.  Because of the way the converted vehicle has been designed, as it is progressively loaded the rear axle MTPLM of 2000 kg will always be reached first.  So if the converted vehicle is loaded to its MTPLM of 3500 kg, the front axle mass can't be more than 1500 kg.  Continental using ETRTO figures recommends 3.2 bar when the front axle mass is 1500 kg.  
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Post by Caraman on Sat Aug 15, 2020 7:13 am

Richard G - I deliberately triggered my TPMS yesterday.  After a couple of miles the amber warning light (tyre symbol with an exclamation mark) came on and flashed and there was an audible alarm.  Whilst it flashed information scrolled on the panel between the speedo and tacho showing low pressure front right 60.9 psi low pressure front left 60.9 psi.  After a while the information stopped scrolling and the amber warning light stopped flashing but stayed on.  Later when I turned off the engine and restarted the scrolling message came back on showing low pressures of 62.4 psi right and left.  At the end of the journey I inflated the front tyres to 5.1 bar.  The TPMS didn't clear on the drive but it did when I took the motorhome around the block.  I will now deflate the front tyres to 4.5 bar which I know doesn't trigger the TPMS but the pressure is still a lot higher than it should be.  In your case, if you didn't get any low pressure scrolling message and the warning light simply stayed on, it probably indicates a TPMS malfunction which as you say is probably a sensor battery.
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Post by Cymro on Sat Aug 15, 2020 11:14 am

Carman: may I please be clear on one point? You reported above that “At the end of the journey I inflated the front tyres to 5.1 bar.  The TPMS didn't clear on the drive but it did when I took the motorhome around the block.”

Did you take it for that short run without delay after re-inflation?

I ask because, in the thread of 2015, Askit asked me: “Cymro, I just wondered if you had got the warning to go off yet?  A Bailey owner, with the same system, on another forum suggested the vehicle has to run for 3 miles to reset.”

To which I replied: “Afraid not, Askit. I ran it for 90 miles after reinflating to the Peugeot figures (5 & 5.5 bar) with no luck.”

Thinking back, I suspect that I didn’t immediately take the van out for a run (of 3 miles or more) after re-inflating. So I wonder if it’s important to do that, to clear the TPMS?

Cymro


Last edited by Cymro on Sat Aug 15, 2020 11:15 am; edited 1 time in total (Reason for editing : tidy up formatting)
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