Olenko nyt ihan väärässä, kun näistä pystyy? lukemaan vikakoodit ilmastoiduista versioista, siitä AC napista?
Niin EI ilmastoiduissakin on tuo nappi, mutta se etupaneeli pitää irrottaa, jotta pääsee painamaan sitä

Ja siellä olis se lamppukin?löysin tämmöisen
https://www.volvoclub.org.uk/faq/HeatingAirConditioning.html#ECCClimateUnitNotOperatinghttps://Josta löytyy vikakooditkin
The ECC climate unit in air conditioning-equipped cars can detect certain system faults and display the appropriate diagnostic trouble code by flashing the lamp in the A/C button. If the control module detects one or more faults, the driver is warned by the flashing A/C button. If a fault is major, the lamp will flash continuously while the engine is running; if minor, the lamp will flash for 20 seconds after the engine is started. To read the diagnostic trouble codes, the engine must be running; the blower selector in AUTO setting; the function selector in VENT setting; the temperature switch set to maximum cooling; the recirculation switch pressed in; and the A/C switch released (out). Shine a strong light on the solar sensor in the dash speaker; otherwise, the DTC for the sensor will be displayed even if fault-free. Retrieve the DTCs by pressing the A/C button in and releasing it within 5 seconds. If several DTCs are stored, they will be displayed sequentially. All will be erased when the ignition is turned off. If no faults are set, then 1-1-1 will be displayed. Note that faults may be in the component or in its wiring.
To diagnose cars with ECC but without air conditioning, no trouble light will illlumine; the system will fail. Remove the ECC module from the dash panel, take off the cover plate and press the diagnostic test button twice within 5 seconds. Read the DTCs from the nearby LED lamp, pressing the button after each DTC to read any more codes
On nämä ihme vehkeitä

Mutta, merkitseekö tämä nyt sitä, että ilmastoidun ja ei ilmastoidun yksikkö on ihan sama?