What's the optimal tire pressure? I have p245 size on my 07 Grand Cherokee. The tire light went on so I checked it (around 30 psi) it says on tire max is 44 but I went to 33 in all tires and light stayed on. Now im up around 40 and light goes on and off as I drive it. It flashes when it goes on. Before it was solid on. What do I do
2007 Jeep Laredo 4x4 3.7 L.
Mods/Additions: Mich. floor mats, Plate Covers (Front and Rear) - Smoke, In dash navigation/dvd player
Looking to add:
Tints, Rear Seat Monitor (not sure where yet), Rear View Cameras
make sure the tires are cold when you do this though as the tires warm up during regular drive ... I set mine at 36 and no light at all ... or it can also be that your TPMS batteries are giving out happened to mine ...
If you set the pressure to 35psi and the light stays on or blinks, it's not a pressure problem. If the tire pressure lamp is flashing, usually for about 60 seconds, then there is a fault in the system. A bad tire pressure sensors is most likely the cause. You'll need a tire pressure sensor tester to find the bad one. Your local repair shop or dealer can help you with that.