MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: Betty02 on February 17, 2011, 07:48:42 am
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Well this is embarrassing! It came on this morning on way to work on my dash. Pulled over checked all Tyres etc got back in and held down same button near gearstick for a few decode, it beeped and went of.feel an idiot asking but what does this light mean?
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Typre pressure sensor
Means that there must have been a drop in one of your tyre pressures, it it wasn't obvious which one it was make sure you check them when you get the opportunity
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I,ve resisted pressing this button since day 1 of ownership..Its you're tyre pressure monitor.Pressure go,s down light comes on..I've read even the slightest drop is enough to light the bleeder.
Are you the second owner of you're GTI.If so maybe the previouis owner set it up.I don't know if you can have it reset.
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I believe it's a low pressure tyre sensor. Mine has come on in the past, only once mind, I got out checked all the tyres and everything was ok. I drove to the garage and checked the tyres and again everything ok. Held the button like you cleared the fault and this have been fine and dandy since - might just be a one off. If it comes on again check the tyre pressures at a garage.
HTH
Andy
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Must be a very sensitive sensor, all I can think is I swerved quite hard for a nice fresh pothole and it came on so maybe I got some tyre roll, was only doing 25-30 though!
Just got my digital tyre gauge out now, they are all fine no major drops, will get them all on the same PSI.
My omanyts are getting new rubber fitted tomorrow (225/40/18's) what is the best pressure to put in them?
Thanks for the help too! :notworthy:
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Set the pressures correctly in all 4 tyres, then press the button till it beeps. Pressing the button tells the car that all pressures are OK. Any drop in pressures will (hopefully) then set it off. Pressing the button when one (or more) may be low is setting it incorrectly and it won't be doing it's job properly! I think it detects changes through the ABS system (or something similar) so it may have been a pothole-induced hiccup!
Hope that explains it. :happy2:
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Aghh sh*t so I've pressed it now and it has incorrectly set the pressure! Will it come on with the change over to 18" Omanyts (Currently got standard 17's)?
I want them right? Might let some air out so it picks it up and leave it on until all 4 omanyts are the same and are all on and reset it then?
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It's only a warning system so it's no drama! :jumping: If you just leave it till you've got your new wheels/tyres on and once they've got the correct pressure in them, just press the button again and all will be well. :happy2:
If you just go with what's written on the inside of your fuel-flap.. Should be something like 2.4bar (34psi) if it's a standard GTI..
Cheers! :drinking:
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It uses the ABS sensors in the wheel to detect the rolling radius of the wheels in revolutions per minute. If these increase/decrease, it deems there is a lower pressure tyre, thus enabling the sensor - rather clever little system
Mine did it after about 20 mins when i picked it up - I put it down to the car having new front tyres the day before, and the system not being reset
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if i change tyres or alloys mine goes off, no drama just push and hold as said :smiley:
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It also requires you to drive in a straight line for a period of time for the system to detect the rolling radius, it also need to be driven in a straight line for it to activate. And it really isn't very sensitive its takes a high percentage distance to trip, for this reason it wasn't suitable for fitment in the US and they had to put a more sophisticated system in that has other sensors to provide a correction factor.
My main problem with the system is that it requires you to be moving for it to trip and when your half way home and your tyres are warm its very difficult to correctly rectify a difference in pressure.
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I guess there is always the consideration of reading the manual too :evilgrin:
You can set it as many times as you like and it should be set after routinely adjusting your tyre pressures.
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It uses the ABS sensors in the wheel to detect the rolling radius of the wheels in revolutions per minute. If these increase/decrease, it deems there is a lower pressure tyre, thus enabling the sensor - rather clever little system
....Doubtless a silly question, but where are these ABS sensors? They're not actually fitted on the wheel itself (as my TyreSure wireless sensors are).
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The tyre pressure monitor is your friend :happy2:
Use it so when your missus has a flat, she notices a light and then phones you :wink:
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Robin... the ABS sensor is on the hub itself, as pictured below albeit on a mk4. The plastic part is the sensor/connector and the 'holed' disc gives the sensor its reading (a bit like a speedo on a push bike)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.notaracer.co.uk%2Fgolf%2Fupdate%2Flatest%2FIMGP0864.JPG&hash=2fe822bd2a12896c8243d27ec583aa63366a69c6)
All it does it calculate the rotational speed of the wheel, the ESP system also works off this information.
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The tyre pressure monitor is your friend :happy2:
Use it so when your missus has a flat, she notices a light and then phones you :wink:
Thats if i was to let the missus drive the car :signLOL:
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It uses the ABS sensors in the wheel to detect the rolling radius of the wheels in revolutions per minute. If these increase/decrease, it deems there is a lower pressure tyre, thus enabling the sensor - rather clever little system
....Doubtless a silly question, but where are these ABS sensors? They're not actually fitted on the wheel itself (as my TyreSure wireless sensors are).
Its the same ABS sensor used for the braking system robin so they are on the hub area not the wheel, and its nothing like your system, that is a proper system with accurate continually data this is a simple your rotational circumference of one wheel varies from a logged figure something is wrong with one of your wheels warning light.
Rich beat me to the sensor question, its a basic system to comply with laws.
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The combination of the teeth or in the case of the one above, phonic wheel, and the ABS sensor will produce a sinusoidal waveform which is monitored by the ABS controller. If the wheel stops moving, the waveform is disrupted and the controller will assume that the wheel has stopped (locked) and will release the brake of the affected wheel until movement is again detected.
Other things on the car such as the Speedo, Sat Nav and in this case TPM will also use that signal combined with’knowledge’ of the rolling radius of the wheel to produce a speed signal. In the case of the TPM it can determine that if the rolling radius changes that the size of the wheel/tyre assembly has changed and will assume flat tyre.
So in this instance not as accurate as the transmitter system used in your car Robin, and indeed some cars will have sensors attached to the wheel inside the tyre.
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So in this instance not as accurate as the transmitter system used in your car Robin, and indeed some cars will have sensors attached to the wheel inside the tyre.
....Except that currently one of my TyreSure sensors failed and the replacement they sent me also appears to have failed and I'm expected to pay each time for the refitting which involves tyre off, sensor replaced, tyre on, whole rebalanced - I love the TyreSure system but am not a happy bunny with their UK distributor! They're also charging my supplier for the replacement sensors! :fighting:
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That's a shame mate, you were so complimentary of their product before but poor customer service cannot be accepted.
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The tyre pressure monitor is your friend :happy2:
Use it so when your missus has a flat, she notices a light and then phones you :wink:
Thats if i was to let the missus drive the car :signLOL:
Thats probably a good idea Alex :signLOL: If changing the wheel, she would then have to know how to use a jack..........
or
Improvise
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fae235%2Fbodger00%2Fchanging-car-tyres.jpg&hash=e9948e8c80287477a70a2d2bb549c9c271619f55)
:signLOL: :signLOL:
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I've had this light come on when I've changed tyres. Because it's calculating rolling radius through the ABS sensor to work out if the tyre is flat any sudden change in the radius of your wheel/tyre combo is likely to set it off, such as changing tyres/wheels or if you've got a very heavy right foot and worn the tyres down quickly!!
As long as you know nothing is wrong just press and hold the button to reset - but do this when the tyres are warm and the car is travelling at a reasonable speed so that it can "re-read" the correct rolling radius to compare with in the future.
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That's a shame mate, you were so complimentary of their product before but poor customer service cannot be accepted.
....I'm still very complimentary about the TyreSure product itself and also the excellent customer service from the retailer Revolution247 in Gateshead (too far away for me to travel to accept their invitation to do the work free of charge up there).. It's the UK distributor I'm very unhappy with - They import all sorts of products and it's just money for boxes on shelves as far as they're concerned. Out of principle I'm going to take this as far as I can and make a lot of noise.