speaking of the X431 I used, it could read the deep level transmission codes, the SRS, ABS etc - but the purchaser had to pay for those as extra software. I recall that unit was somewhere in the USD 1500/- range.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)