derkraut
Posts: 1495
Joined: Fri Jul 16, 2010 7:39 pm
Delivery Date: 14 Jun 2011
Leaf Number: 004248
Location: San Diego vicinity

Re: Tire Registration

Tue Oct 10, 2017 6:36 pm

Powersurge said: "All this computer and phone app crap is turning us into a society of obsessive compulsive pussy willows that have to get their data just the way they like it or they have an embolism. They are probably the same ones that get their meal ingredients ordered by mail so they don't have to cut their own vegetables... As proof, there is even a guy that posted he is going to harrass the shop about it."

I couldn't have said it better myself. Seems like we're getting to the point where we expect someone to wipe our butt when we're done with business. Technology is wonderful, but I think it has its limits, if you want to enjoy life. :roll:
Derkraut
Color: Cayenne SLE, ETEC trim
reserved: 5/15/2010
Leaf del. 6/14/2011
New Traction battery installed on 7/28/2017: 12 bars @37.4K+mi. 100% charge: DD readings: Bat temp 81.3F, Gids=283, S=94.1, C=66.13, H=99.79 394V :)

User avatar
jlv
Posts: 565
Joined: Thu Apr 24, 2014 6:08 pm
Delivery Date: 30 Apr 2014
Leaf Number: 424487
Location: Massachusetts

Re: Tire Registration

Wed Oct 11, 2017 10:38 am

powersurge wrote:The TPMS goes on when ONE of them goes below a certain point. That ALERTS YOU that a tire is below pressure, and you should check ALL of them.

That is just because Nissan implemented a dummy-light on the dashboard. The car knows which of 4 sensors is reporting the low pressure -- in fact, the car knows what the exact tire pressures are. The car just doesn't tell you that because someone decided it's sufficient to just provide a the equivalent of a check engine light ("something is wrong; check everything and see what it is").

A better car interface would show you the four tires and the pressures. Leaf Spy Pro does that - and it's an advantage. Tesla does that on the dash.
'13 SL+Prem (mfg 12/13, leased 4/14, bought 5/17)Tesla S 75D (3/17)
Model 3 reservation
(Probably no LEAF2 for me)

BrockWI
Posts: 572
Joined: Fri Mar 28, 2014 6:28 am
Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: Tire Registration

Wed Oct 11, 2017 8:41 pm

I thought about resetting them after I rotate them viz leaf spy, but then I thought, why bother? As others have said the only "real" thing the car will tell you is if one is low.

Does the car really care which is which? As in if it saw the front left was low does it actually do anything at all or different from if it saw the back left was low?
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

Turbo3
Gold Member
Posts: 1843
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Tire Registration

Thu Oct 12, 2017 1:44 pm

BrockWI wrote:I thought about resetting them after I rotate them viz leaf spy, but then I thought, why bother? As others have said the only "real" thing the car will tell you is if one is low.

Does the car really care which is which? As in if it saw the front left was low does it actually do anything at all or different from if it saw the back left was low?

The DTC error codes for TPMS problems will point to the wrong wheel. This could be a problem if the tech person does not verify correct registration or does not use the external TPMS tool to verify which wheel has the problem. But to the driver it makes no difference if they are not using LeafSpy to see the tire pressures. I like to know which tire needs a little air so I keep them registered correctly. But it is definitely a personal preference.

You can set LeafSpy to not show tire pressures at all if it really bothers you.

BrockWI
Posts: 572
Joined: Fri Mar 28, 2014 6:28 am
Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: Tire Registration

Thu Oct 12, 2017 1:50 pm

I am fine with seeing it in Leaf Spy and I don't count on it being in the correct place, If I see a tire off I check them all manually, honestly I check them more manually than with Leaf Spy.

I was just wondering, if TMPS being in the wrong location could affect say ABS or traction control or do those systems just do what they do?
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

Turbo3
Gold Member
Posts: 1843
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Tire Registration

Thu Oct 12, 2017 5:15 pm

BrockWI wrote:I am fine with seeing it in Leaf Spy and I don't count on it being in the correct place, If I see a tire off I check them all manually, honestly I check them more manually than with Leaf Spy.

I was just wondering, if TMPS being in the wrong location could affect say ABS or traction control or do those systems just do what they do?

I would not think TMPS is used for anything other than the tire warning light. Tires get moved around all the time.

ivh
Posts: 9
Joined: Fri Oct 13, 2017 4:14 am
Delivery Date: 13 Oct 2013

Re: Tire Registration

Thu Nov 02, 2017 2:05 am

Hello! I hope it's ok to "hijack" this thread for an additional question.

I got new winter tires for my Leaf 2013 S over the web, and their TPMS-sensors came pre-programmed. I was planning to register them with LeafSpyPro, but have not succeeded yet. I tried the procedure several times, it gets initiated (blinking yellow tire light) but never finishes. I double-checked the pressures and also tried a larger spread (2.6, 2.3, 2.0, 1.7 bar) as suggested by LeafSpy app maker.

Now I'm just wondering if anyone can think of a reason why this fails. (Otherwise I'll go to a shop soon, but they all are very busy now in changing season.)

cheers
thomas

brotherjethro
Posts: 28
Joined: Mon Jul 03, 2017 6:21 am
Delivery Date: 03 May 2017
Location: Vancouver, WA

Re: Tire Registration

Thu Nov 02, 2017 6:08 am

jlv wrote:
powersurge wrote:The TPMS goes on when ONE of them goes below a certain point. That ALERTS YOU that a tire is below pressure, and you should check ALL of them.

That is just because Nissan implemented a dummy-light on the dashboard. The car knows which of 4 sensors is reporting the low pressure -- in fact, the car knows what the exact tire pressures are. The car just doesn't tell you that because someone decided it's sufficient to just provide a the equivalent of a check engine light ("something is wrong; check everything and see what it is").

A better car interface would show you the four tires and the pressures. Leaf Spy Pro does that - and it's an advantage. Tesla does that on the dash.


I agree the car should show you the actual pressure values. Let me relate two experiences which demonstrate why:

1. I was driving my 3/4 ton truck, towing a travel trailer to our campsite. While crossing the Astoria-Megler bridge, I got a low pressure warning. This bridge is over 4 miles long, one lane each direction, with no shoulder. https://en.wikipedia.org/wiki/Astoria%E2%80%93Megler_Bridge The point being that if you need to stop and change a tire on this bridge, you will cause a massive traffic jam and probably get a visit from the police. Luckily, the truck showed me all the tire pressures on the display, and I was able to see that I still had safe pressure. I made it across the bridge, and while keeping a close eye on the pressure, drove another 10 miles to my campsite, where I changed the tire safely.

2. We also own a Honda CR/V. While driving Hwy 58 in Oregon at about 4 in the morning, I got a low pressure warning in the middle of nowhere. It was cold and dark, and not safe to pull over. Unfortunately the vehicle does not show the actual pressures, so I had to decide whether to pull over somewhere dangerous, or wait until I hit the next tiny town. The car seemed to handle fine, so I sweated it out and kept going about 15 miles into town. When I got out and measured all the tires, they were all fine, though there was a spread of about 4psi between them. Apparently this was enough to set off the alert. Had I been able to read the pressures while driving, I wouldn't have stopped or worried about it until it was convenient, later in the day. (Equalizing all the pressures and resetting the system is all that was required).
2013 Pearl White SV, bought used in 2017 with only 5100 miles. Vancouver, WA.

Turbo3
Gold Member
Posts: 1843
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Tire Registration

Thu Nov 02, 2017 10:42 am

ivh wrote:Hello! I hope it's ok to "hijack" this thread for an additional question.

I got new winter tires for my Leaf 2013 S over the web, and their TPMS-sensors came pre-programmed. I was planning to register them with LeafSpyPro, but have not succeeded yet. I tried the procedure several times, it gets initiated (blinking yellow tire light) but never finishes. I double-checked the pressures and also tried a larger spread (2.6, 2.3, 2.0, 1.7 bar) as suggested by LeafSpy app maker.

Now I'm just wondering if anyone can think of a reason why this fails. (Otherwise I'll go to a shop soon, but they all are very busy now in changing season.)

cheers
thomas

You should take an ELM trace while trying to Register and send it to me for review.

ivh
Posts: 9
Joined: Fri Oct 13, 2017 4:14 am
Delivery Date: 13 Oct 2013

Re: Tire Registration

Sat Nov 04, 2017 3:20 am

Turbo3 wrote:You should take an ELM trace while trying to Register and send it to me for review.


Thanks! I will do that on Monday.

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