TPM sensors

[jonathanw]

Hi

I recently purchased a spare set of wheels and tyres which did not have TPM . My car has TPM fitted and I have purchased the sensors and valves from my local OPC. My local tyre dealer will fit the units at a fraction of the cost that the OPC have quoted. Having looked in the handbook the car has to "learn" if new sensors are fitted by driving at over 15mph for some minutes. Does anyone know if it is as easy as that or does the computer need to be reconfigured by the OPC. The sensors are not "sided" or labelled front or back but they do have specific codes on the sensors and removal sticky bar codes with the numeric codes printed on them.

Your advice would be appreciated.

 

[Nick_USA]

If you look in the manual it tells you how to reset the TPM system to 'learn' your new senders. (If you haven't got a manual say so and I'll cut and paste it for you)

I hope your dealer asked you for the VIN when you ordered them as the senders can vary across model years.

 

[jonathanw]

Thanks for replying Nick. Yes the dealer took the VIN before ordering the parts. I do have a mnaual and did read the bit about learning etc. I suspect that the hub units have recievers in them. In the past I have used aftermarket units which wre specifically set up with left/right/front/back identification on the sensors and a central receiver.

 

[yan]

I have had to reset my system before and the period of a few minutes may be understated - I seem to remember quite a few miles were required, maybe 10+.

 

[tscaptain]

The Gen 2 cars reset much quicker than the Gen 1. Less than 1/2 mile for mine.

 

[jonathanw]

I had the sensors fitted this afternoon and within about a mile the TPM had recalibrated perfectly.

Thanks for the advice.

 

[Oggy]

On the subject of TPM....

My car is back at the dealer again next week for same TPM issue and I was wondering in case anyone else has ever experienced this on a Gen I 997 ??

o Random "Flat tyre" warning, always same (rear) wheel but only happens on the odd day when starting the car...never while running (and not every day)
o Seems only when it's been parked on my drive which is on a slight incline ????
o Reset TPM doesn't make any difference...still get the error next day
o I already checked all tyres (several times) and pressures are fine
o Tyres are inflated with Nitrogen so shouldn't suffer any temperature variations
o When TPM warning is issued, lasts for a few minutes then goes off again

Knowing this problem was somewhat random, I photographed the TPM message day before I took into the dealer last time as I just knew it wouldn't happen while they had it. Not surprisingly, they couldn't repeat the fault and even having had my explanation and seen the photo, couldn't do anything about it. Understandable as where to start looking for cause if you can't even repeat the problem ??

Anyway, it's bugging me now (as it keeps happening) so I booked it in again for next week. Car has extended warrenty but I told them to just change the sensor in the wheel at cost to me if they can't repeat the problem.

On the off-chance....any experience of this (before I pay for a new sensor which might not be the problem) ??

Cheers,

 

[yan]

I have had a one-off bogus deflated tyre alert but it was no more than that - this was on ignition (not whilst driving). Porsche have updated the software on more than one occasion but I would assume that your OPC would have checked this as part of their investigation. No harm in asking"¦ In general the ability of the 997 Porsche systems to track/identify electronic related gremlins I am afraid to say is limited if at all "" I had no end of problems with the alarm/locking system where I eventually I had to insist on parts being replaced as it was wasting time/fuel doing one more check after another to no avail. The diagnostics are no better on the Gen II. Having said that it's the unlucky few who have had problems rather than many if I am not mistaken.

 

[Oggy]

Great, thx J !

I'll ask them to check for software updates relevant to my car (just in case). Failing that, Ctrl-Alt-Del []

Cheers,

 

[fireblade]

2008 Gen 1 Turbo

I have had to reset my system a few times over the last three years but the reset dooesn't seem to work now and it has been learning for over a week!

The batteries were checked last week (how do they do this?) and are alledgedly good for another 50 months. Serious noises were made about the "comfort can circuit"?!? This all sounds expensive and as I am off for a track day this weekend and wanted the car back I declined further investigation.

Anyone any ideas? I am not in a postion to spend much cash on this now that the track season has started and I can live without it until the next service.

Failing that anyone know how to turn that bloody irritating light off?

 

[Nick_USA]

Failing that anyone know how to turn that bloody irritating light off?

Afraid to say that the TPMS warning can only be turned off by correct 'learning' of the new wheels or by an OPC using their computer to change the instrument cluster settings to code out TPMS.

 

[fireblade]

ORIGINAL: Nick_USA

Failing that anyone know how to turn that bloody irritating light off?

Afraid to say that the TPMS warning can only be turned off by correct 'learning' of the new wheels or by an OPC using their computer to change the instrument cluster settings to code out TPMS.

Thanks, I had a sneaky feeling that this would be the case! At least I have an option, repair or remove!

 

[Oggy]

I guess another solution for extinguishing the TPM light is the one my dear departed Grandfather used to silence the seat belt warning buzzer on his (then) state-of-the-art Austin Princess.....a big hammer [][]

 

[fireblade]

ORIGINAL: Oggy

I guess another solution for extinguishing the TPM light is the one my dear departed Grandfather used to silence the seat belt warning buzzer on his (then) state-of-the-art Austin Princess.....a big hammer [][]

I have a selection of hammers, it is just a matter of finding out where to use one!!

Maybe the "learning" will complete on the track on Friday. a bit of high speed stress might wake the sensors up!

Cheers

 

[Nick_USA]

ORIGINAL: fireblade

[FONT=arial"]Maybe the "learning" will complete on the track on Friday. a bit of high speed stress might wake the sensors up!

[FONT=arial"]Cheers

As the car is 'Learning' maybe 'L Plates' would be appropriate []

 

[fireblade]

ORIGINAL: Nick_USA

ORIGINAL: fireblade

Maybe the "learning" will complete on the track on Friday. a bit of high speed stress might wake the sensors up!

Cheers

As the car is 'Learning' maybe 'L Plates' would be appropriate []

I have never seen a Turbo with L Plates!

 

[Oggy]

OPC replaced wheel sensor & valve (£140)...no warning light so far...fingers crossed [8|]

 

[fireblade]

ORIGINAL: Oggy

OPC replaced wheel sensor & valve (£140)...no warning light so far...fingers crossed [8|]

[FONT=Arial"]

I asume that is just for one wheel!

Problem stii exists

It would be unlucky for all four to fail at once so I also assume my problem is more complex with a controller or something therefore more expensive!

I doubt that it will be covered by the extended warranty.

 

[Oggy]

Yes, just for one wheel[&:] I mentioned checking for software updates and he just looked at me with 'that' look [8|] Wasn't covered under my warrenty either as car wouldn't fault while they had it (typical) and I requested they change the sensor as an act of desperation. Anyway, they loaned me their PDK Boxster again for 3 days and with the weather....that alone was worth the £140 [][]

 

[yan]

ORIGINAL: Oggy

Yes, just for one wheel[&:] I mentioned checking for software updates and he just looked at me with 'that' look [8|] Wasn't covered under my warrenty either as car wouldn't fault while they had it (typical) and I requested they change the sensor as an act of desperation. Anyway, they loaned me their PDK Boxster again for 3 days and with the weather....that alone was worth the £140 [][]

Sounds a bit harsh to charge (assuming the warranty woud cover an outright failure) - there clearly was a fault, you even photographed the symptom as evidence, replacing a certain part eradicated it - what would replicating the fault have achieved therefore except to rubber stamp the diagnosis? Glad they are not in the health business : Doctor I've been having these intermittent pains. Doc: can't see any problems and since you don't have the pains at present I can not perform any particular investigation so the only assumption is that there is no problem. Do come back if it re-occurs.

As long as you are happy...