Peugeot Boxer TPMS Warning Level

Flightlevel55

Flightlevel55

Joined
Sep 10, 2022
Posts
145
Likes collected
117
Location
Warrington, UK
Funster No
91,229
MH
Elddis Majestic 125
Can anyone tell me what the lowest pressure I can lower my front tyres to before the TPMS complains about low pressure? I’ve only just realised that the front tyres are not CP and the tyre wall indicates a max pressure of 65. They are currently at 80psi same as CPs on the rear which is clearly over inflated. For the axle weight 65psi on the fronts would be ok but I could do without the TPMS complaing at me. The tyres are 215/70/15 109 on a 2016 Boxer based Elddis Majestic 125.
 
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GeoffnDee said:
If it is any help ,I run my 2015 Boxer panel van with the same sized tyres at 60 psi in the front without TPMS problems .
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Thanks, I was thinking that the TPMS must be set higher if it’s going to a motor home builder such as Elddis given they would expect CP tyres all round and they are normally (not correctly in my view) at 80psi. I have reduced down to 72psi but not driven it since I did it so I guess a short trip will tell me if the TPMS is going to show low pressure.

Travelling around 300 miles to Devon tomorrow so was hoping to get the pressure down a bit more. Just a bit concerned that the sidewall pressure info says max 65 and at the 80psi it was at I guess they would be really over pressure once they warm up on the motorway.
 
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Tigger-Tim said:
The trigger pressure can be adjusted using multiecuscan.
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I must get one of those but when I looked it only mentioned Fiat so I didn’t buy it. I know the fiat and boxer are very similar but wasn’t sure if that included the ECU.

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Flightlevel55 said:
I must get one of those but when I looked it only mentioned Fiat so I didn’t buy it. I know the fiat and boxer are very similar but wasn’t sure if that included the ECU.
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It seems to see all the ECUs on my Citroen except engine and gearbox.

Alfaobd also comes recommended, but I haven't used it.
 
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Flightlevel55 said:
I must get one of those but when I looked it only mentioned Fiat so I didn’t buy it. I know the fiat and boxer are very similar but wasn’t sure if that included the ECU.
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There are several ecus on a sevel van mostly simular /same between the FIAT peugeot citroen version (exception of engine). Multiecuscan can read most except the engine ecu's. Alfaobd can read boxer and relay engine variants.
 
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the1andonly said:
There are several ecus on a sevel van mostly simular /same between the FIAT peugeot citroen version (exception of engine). Multiecuscan can read most except the engine ecu's. Alfaobd can read boxer and relay engine variants.
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Thanks I’ll take another look. I have a basic scanner which can reset the usual fault codes but it can’t alter the TPMS.
 
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I’m interested in how you get on with this. After having a new set of tyres I am running them at the pressures on the door pillar and, as others have said, the ride is very hard. Even the CO detector has fallen off the ceiling.
Please update on your progress.

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Peterd82 said:
I’m interested in how you get on with this. After having a new set of tyres I am running them at the pressures on the door pillar and, as others have said, the ride is very hard. Even the CO detector has fallen off the ceiling.
Please update on your progress.
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I will report back on here. My rears are CP tyres so I will likely leave those at the recommended 80psi for now as that seems about right for the tyre and the axle weight but as the fronts are not CP rated (fitted by dealer before I purchased) then I have some scope to come down to the pressures indicated on the sidewall and for sure 80psi for those is way too high.

ideally I need to be able to change the pre set TPMS to a value that I see as suitable for the tyres and axle weights. I will probably change the rears to non CP at some point anyway as the ride is very hard. My gross weight is only 3.3 tonnes so I should be able to find something suitable or maybe move up to 16” wheels if not.
 
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A few weeks ago my TPS in my 2017 Peugeot based Bailey Autograph alerted me that my tyre was down to 4.8 bar which is about 70 psi
 
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Flightlevel55 said:
I will report back on here. My rears are CP tyres so I will likely leave those at the recommended 80psi for now as that seems about right for the tyre and the axle weight but as the fronts are not CP rated (fitted by dealer before I purchased) then I have some scope to come down to the pressures indicated on the sidewall and for sure 80psi for those is way too high.

ideally I need to be able to change the pre set TPMS to a value that I see as suitable for the tyres and axle weights. I will probably change the rears to non CP at some point anyway as the ride is very hard. My gross weight is only 3.3 tonnes so I should be able to find something suitable or maybe move up to 16” wheels if not.
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That might upset your speedo reading if calibrated for 15"... longer wheel track..
 
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It may well do, I think I’ve seen that mentioned on here but I tend to use a digital gps speedo which I think is fairly accurate and for nav I tend to use Waze which has an onscreen mph reading too. If I can find the right non CP tyres suitable for the axle weights I’ll stick with 15” I think.

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Sue and Rick said:
Diagbox is the Peugeot Citroen diagnosing software but you need adapter leads to use on a Boxer. Euro 5 is different to Euro 4.
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Now there’s another one for me to look up. My MH is a euro 5b even though it was registered in April 16 so I guess it was supplied to Elddis way before that, probably before Sept 15 when Euro 6 came in. At least I don’t have to bother with Ad Blue though.
 
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Ours is 2016 Euro5 non adblue. An adapter I made fits and works on our moho. I have a system from easydiagnostics. Works well and does most of dealer work except downloads.
 
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When the TPS triggers, is it just a warning light, or something more annoying?
 
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cyberyacht said:
Got my Marquis 125 pressures down to 72psi without the dash warnings. Reprogramming is inordinately expensive, so UI'lived with that.
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Inordinately expensive! how much?
A £25 obd2 adaptor and alfaobd £31 will do (if you all ready have a android smartphone) This will do all sevel engines and. for fiat engines will also reset the oil degradation algorithm on euro 6 models. so £50-60 set for life.
ps may need yellow adaptor as well another £10

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80 psi is far to high on the front even for CP tyres I would have though quite dangerous.

When I swapped my CP tryes for van tyres I gave the tyre manufacturer my axle weights to get the correct pressures.
My front axle is 1930kg running at 56 psi.
 
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Lenny HB said:
80 psi is far to high on the front even for CP tyres I would have though quite dangerous.

When I swapped my CP tryes for van tyres I gave the tyre manufacturer my axle weights to get the correct pressures.
My front axle is 1930kg running at 56 psi.
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I agree with that Lenny. I dropped the fronts to 72psi without any tps warning and whilst still way too high it has improved the drive considerably. Actually feels connected to the road now which it didn’t before.

I will look at one of the OBD units when I get back from (very wet) North Devon and see if I can reset the TPMS warning level to something more fitting for my needs.

I’ve left the rears at 80psi as the tyres are CP and that seems to be ok for the tyre size / axle weight from what I have read so far.
 
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Lenny HB said:
80 if far to high on the rear even for CP tyres unless you are running at 2500kg on the axle.
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Interesting Lenny as I went on the pressure calculator (link to the page was on here) and it said for 215/70/15 109 that 80psi was recommended for a 1900kg rear axle. Must admit, I did question it in my mind though. Maybe I need to revisit that.
 
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