Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: pete-preston on August 17, 2021, 01:29:37 PM
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Hi All
I recently became the proud owner of a new Honda Jazz Mk4 EX model,and I love it, EXCEPT for the annoying RDMS system. Enough said.
Yesterday I checked the tyre pressures and all OK. Went onto the M56 motorway and after about 10 min driving I got a Low Pressure tyre warning. pulled over and did a visual check but no obvious problems, so continued at reduced speed.On return home checked the Handbook and discovered that I had to, reset the deflation warning system. The handbook says ,Select Vehicle Settings on the touch screen, then Tyre Settings, but I dont have V/settings button, only a General Settings button which is of no help at all.
How do I reset the system to get rid of the warning icon, and do I have to repeat this after every time I check the tyre pressures !!!
Any help gratefully recived.
Pete-Preston
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It isn't a low pressure warning as such.
What it does is, upon calibration, it takes a note of each wheels rotation stats compared to the others. If one or more wheels changes from calibration then it warns you.
The old advice was always to set your pressures then go on a minimum 15 mile drive taking in left and right bends.
I haven't got my Jazz yet but if the same as the Civic some menu items may not be available if you don't have the car stationary with the handbrake on.
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The Vehicle settings option isn't useable unless you're in park as I remember,
but if it isn't visible, select All Apps, then click the check box for vehicle settings for it to appear on the home screen.
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The tyre pressure warning system will settle down when the new tyres bed in properly. Meanwhile you may need to recalibrate two or three times. Changing any tyre pressures will then probably result in a warning and the need to recalibrate. Better to leave well alone in my opinion once the system has settled down, and only check the pressures if the warning sounds.
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Thanks Steve P
Seems to have fixed it. So I suppose I have to reset after each tyre pressure check. More FAFF. Ahh well.
Pete-preston
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I've had the TPMS on 3 Civics since 2007.
I've only ever had to reset it once* and that was after a new tyre. Under normal circumstances, once it's 'properly calibrated', it should only trigger if there is a problem. You certainly don't need to reset it after topping up pressures. In my experience all 4 tyres lose air equally so get topped up equally.
*After the new tyre it took 3 calibrations because as the new tyre wall bedded in and became more flexible, altering rotation, it triggered it.
It triggered almost immediately, then at about 100 miles and again at about 300 miles then that was it.
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You certainly don't need to reset it after topping up pressures. In my experience all 4 tyres lose air equally so get topped up equally.
Nonetheless it's advisible to set the vehicle to recalibrate (no need to go for a drive - just throw the switch in the settings). This ensures that you've got the maximum buffer before any false alarms occur.
However, barring mishap, the tyres don't need frequent checking and topping up. I did check the pressures on my Crosstar about 11 months after getting the vehicle and all the tyres had lost a couple of PSI. Given that it's not easy to get pressures closer than 1/2 PSI, a pressure check every three months might be appropriate. However, regular visual inspections are advisible. Sensibly that's a quick look before each journey as it takes TPMS some distance (I don't know how much) to decide that there's a problem and 100m on a flat tyre isn't going to do it any good.
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I check mine monthly and I do find seasonal variations.
I got one of these :
https://www.amazon.co.uk/gp/product/B08KZSN79V/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
So my pressures are easily checked and topped up. Going from summer to autumn/winter I've found the pressure can drop by 2 to 3 psi and I have found spring to summer the pressure can rise by 1 or 2 psi. Not a lot in the grand scheme of things though.
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Charles' Law if I remember correctly.
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I've often thought that regardless of outside temp do your tyres get to the same operating temp after say 10 or 20 miles ?
I've always checked my pressures in the shade to avoid one side being different.
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Just an update on my Mk4 in this regard.
I've had problems on all 3 of my last Honda Jazzes. Thought I was going to get away with it with the Mk4 as I've had it for eleven months. No such luck. False alarm in Ayrshire this week. Reset (didn't test pressures but no visible sign of a puncture.
After another 10 miles it went off again. Managed to park this time and check all the tyre pressures - all as they should be so reset again. I've done 200 miles since and no repeat so may be I've cracked it this time.
Not good enough though is it?
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Very odd, I've never had any false alarms on any of my 3 Hondas that have had TPMS.
Mine did go off quite a few months back but that was due to a screw in the nearside rear. They were able to repair it, they reset it and all fine.
I was able to pull into a layby not long after the warning and that tyre had dropped from 33 to 27 so quite a bit of latitude before it triggered. I have no idea how long the screw had been in there but after I pumped it back up to 33, in the layby, I was able to drive about 40 miles home, overnight stand, then to the dealer and it still 'looked' OK.
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Thanks Steve P
Seems to have fixed it. So I suppose I have to reset after each tyre pressure check. More FAFF. Ahh well.
Pete-preston
You will only have to reset the warning if you let air OUT of a tyre whilst checking the pressure OR if need to reflate and then upset the balance by putting TOO MUCH air in one tyre Vs the others.
I have had my HR-V e:HEV for 9 months and have never checked the tyres. Using a visual check frequently (At may age and 76 cars later +motor trade background I am not usually wrong.- Just mentioned to save all the weekly tyre pressure checkers jumping down my throat. ;D)
There should be no need to check on a new car for many months, unless you clobber a curb HARD.
My alert went off the other day. I stopped and checked the pressures and my O/S/F had lost ONE pound! so the system is pretty sensitive.
Two things unrelated to uneven pressure (rotation) that can trip the warning are, one wheel spinning, on say a wet manhole cover, or one wheel spinning on hard acceleration. One wheel therefore rotates faster than the other 3 and trips the warning.
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Thanks Steve P
Seems to have fixed it. So I suppose I have to reset after each tyre pressure check. More FAFF. Ahh well.
Pete-preston
You will only have to reset the warning if you let air OUT of a tyre whilst checking the pressure OR if need to reflate and then upset the balance by putting TOO MUCH air in one tyre Vs the others.
I have had my HR-V e:HEV for 9 months and have never checked the tyres. Using a visual check frequently (At may age and 76 cars later +motor trade background I am not usually wrong.- Just mentioned to save all the weekly tyre pressure checkers jumping down my throat. ;D)
There should be no need to check on a new car for many months, unless you clobber a curb HARD.
My alert went off the other day. I stopped and checked the pressures and my O/S/F had lost ONE pound! so the system is pretty sensitive.
Two things unrelated to uneven pressure (rotation) that can trip the warning are, one wheel spinning, on say a wet manhole cover, or one wheel spinning on hard acceleration. One wheel therefore rotates faster than the other 3 and trips the warning.
Thanks for the detailed explanation. I think this might explain why the Deflation warning system kicked in on my car earlier this week (see above post). At one point, on a narrow lane, I did have to get on to a grass verge to allow on oncoming vehicle to get past. There was a bit of wheel spin as I moved off.
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Have my crosstar 2 year - only 3 occasions when warning came on - first time - I had a puncture - it gave me 20 seconds warning ( it was quite a big nail!!) other 2 - one 3 days ago - was a tyre, dont know which one, was just out of cal - so I check pressures, reset slightly - reset the system - uncle is Bob.