Tire-pressure Monitoring System (TPMS) sensors become unavailable

Before describing what's happening: * When car was new, tires had 2.8 Bar. * Car's tire pressure sticker says; 2.5 Bar. * Today: all tires have: ~2.5 Bar. Now, the scenario is: * On highway, at 110km/h there's a slightly rougher road with more tire vibration. * When entering the (slightly) rough road segment at 110km/h, all TPMS sensors immediately become yellow. * They sometimes came back after some time. * Sometimes only 3/4 sensors disappeared. * But now none come back at all. This brings me to the point I wanted to originally raise: * Are there any quality issues with the TPMS sensors? * Alternatively, are they simply built too badly to resist a little vibration, which is arguably within normal road conditions? Curious to hear your thoughts. Overall it doesn't bother me too much, but thought I'd raise it, and see if anyone has similar observations.