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The transmission ECU in the L322 switches to its ‘cooling strategy’ mode (i.e. inhibits upshifts) if the bulk oil temperature in the transmission reaches 140 deg.C. (284 deg. F.) and cancels it again when the fluid temperature drops below 130 deg.C. (266 deg.F.) – I guess this a BMW strategy so the E53 will do the same?
Phil
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