Battery Drain Test - Suspect

[XTiguanX]

Yeah, a multimeter would work. Even better if it had on inductive pick-up, or current clamp.

Thanks Umai, I think the RACV guy used current clamp. Will try to get one over the weekend.

[Transporter]

I did have one come to me around 2009, that was virtually brand new. Had a faulty Convenience module in it, that kept 'waking up' once the CAN network went to sleep.

If you watched the current draw, it'd gradually drop down to 0.2A after 20mins, once the CAN network went to sleep. Then BAM, the CCM would wake up, and start drawing huge current.

Don't you mean 0.02A or better still 20mA? Anything over 0.1A (100mA) will flatten the battery especially the aged ones.
The 0.2A will flatten your battery over the weekend if you don't use your car.

[Umai Naa!!]

Yes, correct.

Small error on my part.