Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Heating Output, Checking
The heat output test takes place via a test program in the Vehicle Diagnostic Tester, to do so proceed as follows:
Procedure
-- Connect the Vehicle Diagnostic Tester.
-- Select Diagnostic mode and start the diagnosis.
-- Select the Test plan tab.
-- Press the Select custom test button and select the following tree structure in order:
- Body
- Heating, Ventilation & Air Conditioning
- OBD-capable systems
- 08- A/C/Heater Electronics - E87
- 08- A/C/Heater Electronics - Functions
- 08 - Miscellaneous functions
- → Vehicle does not heat
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.