In the Refreshed Model S Plaid, the passenger airflow always blow upwards.
The lower vent is constantly on, despite settings from the MCU, causing the airflow to be directed upward.
When changing airflow from MCU, I am able to hear the sound from the motor, but there's no change with the lower vent airflow.
Diagnosis
1. Main issue is the lower ventilation is not modulated.
2. Only way to flow air downward is to block the lower vents by tape.
3. Diagnosis matrix. Erroneous states are highlighted with RED
Additional notes
- When I set airflow downwards from MCU, I can hear a valve-like sound, but airflow is not affected
- No issues for horizontal adjustments or splits. I can see the flaps move correctly
Any suggestions on how to self-troubleshoot?
- I'm willing to take the panel apart to further diagnose, but I couldn't find any manuals or videos online showing location of the trim clips.
- @DavidStacey resolved a similar issue where his 3 only blows downward by removing a foam that blocked the valve
- Do I need to remove the top of the dash, or the glove compartment, to locate the valve for lower ventilation?
Given I had numerous unfortunate events from SC, I will not visit SC only for this slightly inconvenient issue.
@WilliamG would you mind testing this out when you get your car back?
The lower vent is constantly on, despite settings from the MCU, causing the airflow to be directed upward.
When changing airflow from MCU, I am able to hear the sound from the motor, but there's no change with the lower vent airflow.
Diagnosis
1. Main issue is the lower ventilation is not modulated.
2. Only way to flow air downward is to block the lower vents by tape.
3. Diagnosis matrix. Erroneous states are highlighted with RED
Additional notes
- When I set airflow downwards from MCU, I can hear a valve-like sound, but airflow is not affected
- No issues for horizontal adjustments or splits. I can see the flaps move correctly
Any suggestions on how to self-troubleshoot?
- I'm willing to take the panel apart to further diagnose, but I couldn't find any manuals or videos online showing location of the trim clips.
- @DavidStacey resolved a similar issue where his 3 only blows downward by removing a foam that blocked the valve
- Do I need to remove the top of the dash, or the glove compartment, to locate the valve for lower ventilation?
Given I had numerous unfortunate events from SC, I will not visit SC only for this slightly inconvenient issue.
@WilliamG would you mind testing this out when you get your car back?