Code PMR_a005 was reported by the “Pedal monitor — rear drive” controller in the car. The letter “a” in the middle places it among entries of the alert type.
Pedal and torque supervision for the rear drive unit. The codes mean the same as the PM group.
The most common type. The car logged the event and may have shown it on the screen. The range is wide — from something trivial that clears itself to something that needs attention.
This is how the fault is named inside the car's firmware. For codes without a description it is the most precise clue there is — the name itself says what the event is about.
The text below comes from Tesla's technical documentation. We leave it in the original English so that translation cannot shift its meaning.
DAS_inertialSignals was not Received
Messages missing for more than 3 seconds after radar startup.
Clears automatically when message is received
Radar functions are disabled and autopilot features will be disabled
ECU Internal Over Temperature - The Radar internal NTC has detected above than normal temperature
When the radar internal temp exceeds the upper temperature threshold.
Cleared when the temperature of the device reaches nominal operating temperature
Radar functions will be disabled due to high operating temperature
The radar is not receiving the vehicle identification number (VIN) message from the driver assistance system (DAS) Electronic Control Unit (ECU).
The vehicle identification number (VIN) message has been absent for more than 3 seconds after radar startup.
The vehicle identification number (VIN) message is received.
Radar functions are disabled and Autopilot features will be disabled.
A condition prevents successful CANRX (CAN message received) for the wheel speeds message, relating to a checksum, a counter, or an out-of-bounds signal value.
The wheel speeds message sent from the driver assistance system (DAS) Electronic Control Unit (ECU) to the radar controller (RADC) ECU is not as expected / as required for the radar to be enabled.
Messages are received as expected by the radar controller (RADC) Electronic Control Unit (ECU).
Radar function will be disabled.
Copy it exactly, letter and number included. Photographing the screen is safest — codes often differ by a single digit, and mixing them up leads somewhere else entirely.
Some codes clear after a screen restart or after the car sits locked for a few hours. If the code does not come back, it was usually a one-off glitch.
A one-off entry and a code that appears after every drive are two different things. It helps a service centre enormously if you know exactly when it shows up.
With airbags, brakes, steering and high voltage there is no point waiting it out. With the other groups you can watch and see whether the code returns at all.
Error codes are only part of the picture. For cars on TesList you also see battery health pulled straight from the vehicle, plus a price calculator that works out from current listings what a given car is actually worth today.