I had the front driver side tire malfunction (blowout) where pressure went from 38 to 26 in about 30 seconds.
MB Roadside towed to a MB Dealership where the tire was replaced and an Alignment was recommended.
I picked up the car at the end of business day on wednesday. Today, Thursday afternoon, I checked the tire pressure (tires were warm not hot). All tires read 45 psi. I had informed the SA to have tech.set psi 34F and 33R.
I drop the tires psi( not cold,) to 36F and 35R until tomorrow when the tire will be cold and have sat overnight.
But Driving tonight for about 30 minutes a Yellow light Adjust Correct tire pressure (rear driver side then soon after the rear passenger tire said the same and both showed Yellow on the screen.
Do I simply wait until tires are cold, set the recommended psi in my case 33F and 32R and then via the Manual, attempt to restart the tire pressure monitoring system to reflect the change or do I need to bring it back to the Dealership?
Thanks.

Yes, you just need to restart TPMS so it sets your pressures as the reference values. It's standard procedure. The dealership inflated them to a higher pressure and then restarted the TPMS, so your current reference values are too high and there TPMS thinks you lost air.

Thanks. I'll give it a go tomorrow morning. The malfunction occured friday evening, towed to an inside Parking which is down the block from Dealership. Drove in saturday morning and SA stated it should be finished by monday afternoon. After many text to SA I was still
not sure it was going to be finished by Wednesday.
I also need a front passenger tire that hopefully be in by saturday.
Since both tires were at 3/32 my MB Tire and Wheel package will not cover it. I'll deal with that issue sometime next week.
They did the Alignment with one of the worn front tire and all tires set st 45psi. Not sure if it needs to be done again once the other front new tire comes in and the proper psi set.

I've checked all my tyres for nails or punctured but I'm losing pressure from my rear driver side tyre. I pump it up and will lose about 10psi over a week. Can the leak be coming from the air inlet?

Yes, the valve can leak, or the tire bead doesn't seal properly anymore, for example due to a bent wheel. It's also possible that whatever went in broke off and you can't see it from the outside. This happened to me last week. Pulled out of the garage and as I was leaving my neighborhood I noticed that my rear left tire was 3 psi low. Turned around and tried to find the puncture. Had to roll the car back and forward several times until I finally spotted it. It was two small metal pieces that went in deep and then broke off, they were about the size of a needle. Best to take it to a tire shop. Some have a water tank to submerge the wheel and see where it bubbles. You can also spray some soapy water all over it yourself and look for bubbles.

Yes. Simply set each tire to the desired psi and just reset the TPMS. A short drive showed the correct change I made.
The Dealership then called and stated my other front tire was in. So car is there now and I will insure the correct tire pressure and an updated Alignment Report (dated today)was done.
Annoyed for sure with this SA and Dealership.