3 ms·
I have not driven any Mercedes in a looong time, I'll have to try that. I also live at 8000 feet and regularly drive up to 10000 feet so that might be part of w
by crunchlibrarian 8y ago
I have not driven any Mercedes in a looong time, I'll have to try that. I also live at 8000 feet and regularly drive up to 10000 feet so that might be part of why every transmission seems horribly confused. Some car makers don't seem to test for thin air at all.
- fingerlocks 8y agoCan you elaborate on this? I understand that engine combustion is affected, but how does that impact the transmission? Is the torque curve skewed? Are ambient air changes not compsensated by the O2 sensor? Or does the transmission oil change in viscosity or something?
- crunchlibrarian 8y agoI don't know the details about how different engines detect air flow and oxygen (and I doubt anyone outside of a few dozen engineers who work at the companies do) but some of the auto transmissions seem to randomly upshift and downshift for no discernable reason, even when not applying throttle at all. Some brands are just known to throw sensor and airflow codes by mechanics up here, like Kia & GM, while others compensate fine, like VW & Subaru. I don't know how the engine software talks to the transmission software so it's hard to say how related they are.