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Tire Monitor System warning light

1.2K views 23 replies 11 participants last post by  cfphelps  
#1 ·
Having owned my '17 Heron White A6 SS for close to two years and driven 9000 miles, I can say this car ticks every box of what I want in a car. Performance, handling, and a comfortable road car - the total package all the while being a unique sleeper and unknown by many. Lot's of fun when turning out at South OC Cars n Coffee in So. Cal.! Want to bring this question up to the forum. While running a short errand yesterday, the "Service Tire Monitor System" warning light came on my dashboard display. I checked and reset all tires to recommended pressures (36 lbs.psi - some were off by 4-6 lbs.). The warning light is still on after pressure adjustment - does it take some driving time for this system to reset? I drove approxiamtely 5 miles after adjustment. What other action can I take to rectify this? I did see a section in the owner's manual that gave reference to this. Suggestions? Thanks to the great SS community that realizes we own one of the last great sedans in the automotive empire!
 
#4 ·
I just replaced all 4 TPMS this spring on my '16 since when I summerized it this year both driver's side were out, and the batteries on the passenger side were also pretty bad.

If tire pressure is correct and you have the warning on, it seems likely you've got a communication issue between the sensors and the car, so likely your batteries are also just done.
 
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#5 ·
I love the way you speak about these vehicles in such high regards, well spoken sir!

So after making sure all the tires PSIs are set properly and driving it for a while, the light should/will turn off by itself. You can also use a tpms scan/reset tool to manually relearn the tires/positions (I do this every time I rotate them side to side) you put the car in learn mode by using the menu button on the signal lever when you're in the tpms screen, then use the tpms scan tool to read each wheel, then the light will turn off instantly.

If both these methods still fail to turn the tpms lamp off, then it can be safely assumed that the indicated location/s wheel sensor has died. There's another thread currently talking about the dangers of letting any random tire shop handle this for you, so check it out also, and be forewarned.
 
#12 ·
I love the way you speak about these vehicles in such high regards, well spoken sir!

So after making sure all the tires PSIs are set properly and driving it for a while, the light should/will turn off by itself. You can also use a tpms scan/reset tool to manually relearn the tires/positions (I do this every time I rotate them side to side) you put the car in learn mode by using the menu button on the signal lever when you're in the tpms screen, then use the tpms scan tool to read each wheel, then the light will turn off instantly.

If both these methods still fail to turn the tpms lamp off, then it can be safely assumed that the indicated location/s wheel sensor has died. There's another thread currently talking about the dangers of letting any random tire shop handle this for you, so check it out also, and be forewarned.
Does Tire World have a good reputation...or a local dealer?
 
#7 · (Edited)
You can take it to a good tire shop that can check/reset the sensors (my Discount Tire store does it for free). If that doesn’t fix it then you’ll need to troubleshoot deeper.
 
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#9 ·
On the tire display in the dash, does it read the correct pressures on each tire? I had to replace all my TPMS batteries last year on my 2016.
At first I thought you were nuts, but then I realized not everybody goes through a set of tires each year like I do. :ROFLMAO:
So how do I replace battery? Location? Or is this a Chevy dealer thing? Any info is much appreciated
 
#13 ·
Thanks to all for the responses on TPMS service - two questions - do I understand correctly that EACH tire has a battery unit sensor that can fail individually and need replacement? Secondly, if I ensure correct tire pressure manually (I'm old school - a good pressure gauge doesn't lie), can I wait to do this service when I replace tires without doing any damage to this system? I likely have 15,000 - 20,000 miles left on current tires. Any ideas on how much it costs to switch out all for sensors? Retired, kinda on a fixed budget, but loving my SS! Want to take the correct action.
 
#14 ·
You can find new sets of four pre-programmed tpms sensors on Amazing for about 40bucks, our cars use 315mhz (i went with A-Premium brand theyre great). You can replace 1, 2, 3, or 4 at a time. I just replace each as they die. Some people replace them when they get new tires. But they usually last about 5-7years so depending on how often one needs new tires, just think about it.

Each wheel has the tpms sensor mounted inside right where the valve stem is, thats part of the unit. Also you can check/adjust your tires psi's as often as you like/need. I check mine about monthly with the gauge, but check the tire info display every drive.

A good tire service shop will probably charge about $20-30 per tire to replace the sensor/s. That includes accessing it, replacing it, making sure the tire/wheel is balanced afterwards, and reinstalling on vehicle if you need that done too, and resetting the tpms system.
 
#16 ·
Gosh theyre on sale even cheaper now, this a great deal for a set.
 
#19 ·
I have determined that I have two sensors that are bad as only the right side tires display tires pressure on display screen on console - both left side tires not displaying anything (likely battery units are shot) I took your advice and quizzed two local tire shops on replacing these units - question comes up on how to re-set/reprogram system with new units if I buy the replacements- is this easy to do with replacement units that are listed above? One shop quoted $25/tire for replacement of new units, the other wanted over $50/tire. Advice/suggestions?
 
#17 ·
One thing to be aware of is that tire sensors are rated for a maximum wheel speed. So if you're the type of driver that might take the SS over 100 mph make sure the sensor is rated for it!
OEM is safe to the limiter.

I use Autel MX sensors as I have the tool to activate and program them (battery drain starts when programmed). At 12 grams these sensors are rated a bit lower than OEM with a max speed of ~130 mph.
 
#21 ·
You will need to buy a relearn tool to do the relearn yourself. The tool needed used to be $60 then $40 then $20, now it runs between five and ten bucks online. The tool needed is the EL-50448, and the very easy procedure is outlined in the owner's manual.


relearn tool
 
#22 ·
EVERYBODY,, should have one of these!!!!


Thats how they are programmed. Just RTFM and follow the instructions. NOT difficult!!

ES
 
#23 ·
Tire shop will do the relearn.
 
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#24 ·
Almost had to replace mine, it was showing my right rear tire as flat when in fact it was my drivers side. Thankfully they were all good to go, the tech told me when my tires were rotated the computer most likely did not register it.
Some newer vehicles will automatically learn, but the SS still must be manually "learned" or "programed" for which sensor is in which location, so if they rotated the tires and didn't reprogram, that's probably the cause.

Thanks to all for the responses on TPMS service - two questions - do I understand correctly that EACH tire has a battery unit sensor that can fail individually and need replacement? Secondly, if I ensure correct tire pressure manually (I'm old school - a good pressure gauge doesn't lie), can I wait to do this service when I replace tires without doing any damage to this system? I likely have 15,000 - 20,000 miles left on current tires. Any ideas on how much it costs to switch out all for sensors? Retired, kinda on a fixed budget, but loving my SS! Want to take the correct action.
Your other questions were already answered, but I wanted to touch on your specific question - the only downside of waiting until you change your tires over is that the system won't read the pressure in those tires. So if you are doing it manually, you're good, but you may have to clear the "Service TPMS" message each time you start the car, which can be annoying! No damage to system though!
I have determined that I have two sensors that are bad as only the right side tires display tires pressure on display screen on console - both left side tires not displaying anything (likely battery units are shot) I took your advice and quizzed two local tire shops on replacing these units - question comes up on how to re-set/reprogram system with new units if I buy the replacements- is this easy to do with replacement units that are listed above? One shop quoted $25/tire for replacement of new units, the other wanted over $50/tire. Advice/suggestions?
The tire shop should have a reprogram tool and just redo the programming for you. If those sensors are the correct frequency and compatible with the SS, the program tool that works with the SS should work fine on them, but I don't have direct experience there. The prices you mentioned seem reasonable depending on what they are including (balancing afterwards, etc.) so some of the 25 difference between your quotes might be related to that.

I actually had a very similar situation this spring (I mentioned it earlier in this thread) where the left side didn't register at all, but the right did, so I knew I had at least 2 bad sensors. My shop was able to read the voltage on the right side that was working and saw they were pretty low, so I opted to just replace all 4 at once while it was there, rather than wait on the other 2 and bring it back later, but that's certainly an option as well.
 
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