'07 S80 3.2 - Tire Pressure Sensor

Post by **E Showell** » 11 May 2019, 07:32

Getting a low tire pressure message (right front). All season radials recently swapped for snows. There's at least 35 lbs. of pressure in the tire giving the reading. I'm guessing faulty sensor.

Any thoughts?

If faulty sensor, what's the preferred replacement? It's my wife's car, so I like this feature.

Post by **Skymongrel** » 14 Dec 2021, 18:58

Did you ever get an answer to this problem? Got some nice wheels from the junkyard for my son's 2007 S80 and I'm wondering if I should replace the TPM sensors. If so are there value priced aftermarket ones that work. I believe the 2007 will relearn just by driving? Any help is much appreciated.

Post by **E Showell** » 15 Dec 2021, 03:34

Not sure I got a direct answer here, I just don't recall. What I did learn, however, is that TPM sensors each have a built in battery and they only last so long. When the batteries give out, you replace the sensor, or ignore the warning and go back to checking your tires like we did pre-TPM systems. If you go with replacements, I think they have to match the frequency the car reads.

Post by **Skymongrel** » 15 Dec 2021, 07:54

Yes, frequency is 433 for 2007 S80. I overlooked the battery issue and now I think I need new batteries or sensors, else I can expect a call from my son at some point regarding a sensor issue. The prices vary considerably on these sensors. Thanks.

Post by **E Showell** » 15 Dec 2021, 09:05

I don't think the sensors contain replaceable batteries.

Post by **pgill** » 15 Dec 2021, 09:43

For my LR2 I purchased programmed Continental sensors

The equivalent for my S80 would be (this is what I will buy when needed)

VDO / CONTINENTAL SE10004A 433.92 MHz; Multi-Application Sensor; Programmed

Make sure that you get a programmed sensor.

I did change the Wheels for my S80 but I just swapped the sensor and used a rebuild kit.

The Wheels on my Land Rover are Volvo Wheels as well so I have an extra set of Volvo sensors on the shelf that I removed from those wheels. (I am not sure that they work but I will find out if one of my 2010 vintage sensors fail)

Good luck

Paul

PS the tire store that I use didn't want to replace the sensor so I had them dismount the tire from the wheel and I replaced the sensor. For my S80 I did this in real time at the shop while the technician was working to dismount the next tire. "Talents of a Misspent Youth"

Post by **Skymongrel** » 19 Dec 2021, 06:40

"A programed sensor", thanks Paul. I got the two tires mounted on my junkyard rims (no road rash!), the garage warned me about old batteries, especially since its a 2007. After rolling the new mounted tires back to the car the kid that helped me said he'd test the sensor with his sensor device and they tested OK. So looks like they should be good for awhile (haven't put them on yet).

I've seen videos of guys replacing batteries. Maybe if I get bored I'll try this. I'll also check out the Continental sensor as well.

As a side note I noticed that the tires originally on the car were 94v load rated. I think the S80 wants a 98 rated tire. Thinking I should inflate at a higher pressure. 35 psi is standard for this car but with under rated load tires I believe I've read that you can go higher. Just thinking it may help with some shoulder wear I noticed from tires that were originally on car when we acquired it. I've also read that the S80's can be tough on tires? We'll see.

Post by **volvolugnut** » 19 Dec 2021, 10:54

Any other data points on TPS battery life? I did not realize they had batteries.

volvolugnut

Post by **pgill** » 19 Dec 2021, 19:29

I have two sets of wheels for my LR2 and the set that came with the vehicle were from 2007 and a far as I know thy still work fine.

For my 2010 S80 I am also using the original sensors.

Post by **pgill** » 19 Dec 2021, 19:40

Skymongrel wrote: ↑19 Dec 2021, 06:40 "A programed sensor", thanks Paul. I got the two tires mounted on my junkyard rims (no road rash!), the garage warned me about old batteries, especially since its a 2007. After rolling the new mounted tires back to the car the kid that helped me said he'd test the sensor with his sensor device and they tested OK. So looks like they should be good for awhile (haven't put them on yet).

I've seen videos of guys replacing batteries. Maybe if I get bored I'll try this. I'll also check out the Continental sensor as well.

As a side note I noticed that the tires originally on the car were 94v load rated. I think the S80 wants a 98 rated tire. Thinking I should inflate at a higher pressure. 35 psi is standard for this car but with under rated load tires I believe I've read that you can go higher. Just thinking it may help with some shoulder wear I noticed from tires that were originally on car when we acquired it. I've also read that the S80's can be tough on tires? We'll see.

If you are getting new Tires I recommend that you get the 98 load rating.

Having said that

98 = 1653 x 4 = 6612 lbs.

94 = 1477 x 4 = 5908 lbs.

The curb weight of my 2010 S80 is about 3800 lbs.

Here is the way I would think about the 10% reduction in load rating

If you routinely load the car with five large people their luggage and a roof rack with more luggage and you tow a trailer then you absolutely need the 98 or possibly even higher.

Conversely if you drive with only three or four people with little or no luggage then the 94 should be fine.

And using a higher inflation pressure is a very good idea.

Take care

Paul