[AW128i]

The TPMS light came on yesterday morning and so I checked the tires and everything seemed normal. Drove to work and back, let car sit for a couple hours and pressures were reading a few psi higher than they were in the AM, but I added a couple psi of air just in case. No luck, TPMS light still on. Checked again today and pressures were where I left them the day prior. Recommended pressures are 32 front/35 rear (non-sport package) and that's where I normally keep them. Right now they're at 33 front/36 rear and the light is still on. I'm using the same pressure gauge I've always used and it's a manual gauge so I don't think that's a variable. If a battery goes bad in one of the sensors, would it trigger the light?