TPMS

[Hadrian1]

It's that time of the year again when the TPMS light comes up on the display due to the drop in temperature.

All four of my tyres were well down on pressure. All around 25psi, so I put them up to 32psi. Just need to check the spare.

Also if the car isn't used every day, check the 12v Battery voltage.

 

[Hadrian1]

Just to add.

I was very surprised to see that the space saver wheel on the Rav, needs to be inflated to 60 psi !

I got it up to 50psi, standing well back  😵

[ROCKETRON]

I got the picture of a tyre with exclamation mark in it today. I was surprised that it didn’t say which tyre was low. I checked them and they were all down a bit so topped up to 32 all round. If I had a real puncture would it say which tyre or is it not that intelligent

[philip42h]

2 hours ago, ROCKETRON said:

is it not that intelligent

It's not that intelligent! 😉

[Cyker]

When did they start showing tpms data on individual wheels?

My Yaris shows it but it surely wasn't the first Toyota to get that feature?!

 

[Rambler56]

On 9/29/2024 at 1:01 PM, Hadrian1 said:

It's that time of the year again when the TPMS light comes up on the display due to the drop in temperature.

All four of my tyres were well down on pressure. All around 25psi, so I put them up to 32psi. Just need to check the spare.

Also if the car isn't used every day, check the 12v battery voltage.

 

Set your pressures 2psi below what they should be, reset the TPMS, then add the addition 2psi.  It stops sensitive sensors from false alerts when the temp drops.

[Red_Corolla]

3 hours ago, ROCKETRON said:

I got the picture of a tyre with exclamation mark in it today. I was surprised that it didn’t say which tyre was low. I checked them and they were all down a bit so topped up to 32 all round. If I had a real puncture would it say which tyre or is it not that intelligent

If it's a real puncture then a visual indication will be given when you alight from the vehicle 😂

In all seriousness, though, if one needs topping up then the chances are they'll all need a bit, or at least a proper check with the gauge, just as you found. There's no real advantage in knowing which individual wheel triggered the warning. Another thing to bear in mind is that the sensor readings are often temperature-compensated; they're not to be relied on for absolute accuracy or used as a substitue for normal regular checks with a gauge.

Having said that, I understand that Toyota have now switched to the system that displays the individual readings like other manufacturers. Customer is always right, I guess. Not having each sensor married to a specific corner of the vehicle was better for folks who wanted to be able to swap wheels around etc., but I expect they're in the minority.

[Station]

Mine shows individual wheel / pressure and I believe if you rotate wheels then the system figures out which wheel is where on the vehicle.

I think Toyota was just a little slow to catch up with what other manufacturers have had for a good number of years !

[Hadrian1]

How did we ever manage to drive from point A  to point B, before the days of TPMS ?

[Rhymes with Paris]

2 hours ago, Hadrian1 said:

How did we ever manage to drive from point A  to point B, before the days of TPMS ?

By giving the tyres a hefty kick before each journey.

Foot bounces off, tyres ok.

Foot sinks in a bit, tyres too soft.

It is especially important to use this method when inspecting a car for sale prior to a test drive.

[Nick72]

On 10/1/2024 at 6:54 PM, Rhymes with Paris said:

By giving the tyres a hefty kick before each journey.

Foot bounces off, tyres ok.

Foot sinks in a bit, tyres too soft.

It is especially important to use this method when inspecting a car for sale prior to a test drive.

😂👍

Kick test or foot on top of tyre and press.

And for shock absorbers and springs. Bounce each corner. If bounce different from left to right then there's a problem.

Engine issues. What's coming out of the exhaust. Blue, white, thick. And ear to the bonnet. 

The fault detection and diagnosis was all in the human brain and senses (sound, visual, smell, tactile including vibration). I don't recall ever tasting anything btw. That brake fluid tastes a bit off kind of thing.

[Cyker]

Don't forget to check the elbow grease and headlight fluid!  

[Rhymes with Paris]

1 hour ago, Nick72 said:

I don't recall ever tasting anything btw. That brake fluid tastes a bit off kind of thing.

When I first got my CRV I noticed some liquid on the ground under the car.

I had not had a car with auto climate control before, so feared the worst, such as coolant leaking.

My pal Denzel tasted it, and solemnly pronounced that it was definitely coolant,as he could most definitely taste the sweet anti freeze in it.

Which was rather strange as I then remembered a chap with a new BMW who had it into the dealer for the same thing, and found it was just condensation from the climate control components, which is apparently common during hot weather.

That's all it was on the honda too.

Mind you,he wasn't an expert on auto diagnosis like what I am.