iPhone 11 Pro Max Bluetooth losing connection

iPhone 11 Pro Max Bluetooth losing connection when connected to the 14' Toyota Highlander. Until last week the XS Max that I traded had no issues connecting and never dropped even once using the 13.1.0 version. Now every few minutes the 11 Pro Max connection drops and the only way to get it back is to turn the engine ignition off and on. I cannot do this while driving so when I stop at the red stop light, I have to stop and start the engine and the Bluetooth connects again but only for a short time. No other technique works like turning the BT on/off, or power cycling the phone or going to airplane mode. Apple please fix this problem ASAP. This is ridiculous having paid a heavy price I shouldn't be dealing with kind of issue.