Checking the preheating device (Audi Q5-8R)

Used automatic glow plug timing "L 79" is located in the relay and fuse block in the switching block of the water drain box.



A. Used automatic glow plug timing "L 79"

The pre-heating system is controlled by the used automatic glow plug timing system "L 79". The used automatic glow plug timing system "L 79" is capable of self-diagnosis. If the pre-heating system fails, an error record is saved in the engine control unit. Checking the pre-heating system is described in the "Guided Troubleshooting" section. To implement the quick start function, the electronically controlled glow plugs are equipped with their own used. Each glow plug is controlled and diagnosed separately.

[Information obtained from this resource «AudiManual.ru»]