..how to enable tyre pressure sensor indicator..

[Ecc0]

..some time back, during driving, indicator on dashboard turned on, followed by 'beep' sound..later i checked and yes, back right tyre lost some pressure..however, after bringing tyre pressure up to standard, indicator was still on, so i checked on various forums and everybody told me, I need to 'reset' thing, by holding button with tyre pressure sensor icon on it for about 5 secs (or something like that, I cant remember now), what I did, and indicator from dash board is gone..now..few months passed and i have some weird feeling that my tyre pressure sensor is actually disabled by my action, rather than reset...so, what i did, I decided to deflate one of the tyres and just give small round to see, is it going to pop up same warning message on dashboard..and I was not surprise when indicator didnt pop up even tyre was at 1.6 out of 2.5 psi. So, that brings the question, how should i enable tyre pressure sensor again ??EDIT:Can any of you guys confirm, is this right procedure to reset/enable tyre pressure sensors?1. Check Tire Pressure to make sure no variance from side to side.2. Sit in car, with out touching the pedals.3. Key in ignition, Turn key on to engine off position (second position).4. Press and hold TPM until TPM lights go out completely on the dash.5. Press and hold TPM again until yellow TPM light indicator comes lit on dash.6. Start car and drive. Light will go off itself once it has calibrated tire pressure. (might go out at idle).