BMW E63 seems to loose power in Sport mode - Vehicle Parts & Accessories

Check fluid level,

Hi my name is Stanton I have a problem with my bmw x3 2004 model when it is in 2 gear and when it must change to 3 gear it go into limp mode

need to plug it into diagnostic machine to get further
fault code and go from there

Set your profile to an online mood Like General, Hold the power button shortly and the phone should give you a list of profiles, choose general and your phone is back online.

Hope it helped you.

Thanks

ECUs generally cannot be repaired. You will need to replace the ECU eventually it will simply fail and the car will not start.

The EH gearbox switch serves to communicate with the TCM (Trans Control Mod). In A mode, it tells the TCM to operate in the most economical shifting program. M mode is for manual shift. If you have a * instead of a M, it stands for winter mode. This mode causes the vehicle to start off in 2nd so that torque is reduced thus reducing wheel spin on slick surfaces. Of course, by shifting into 4 or 3 puts you into sport mode for a more spirited shift pattern.

It is always in the hood on the passenger front towards the full light. It has black rubber cover.

Sorry, but it seems like you have bad valve stem seals. You should also get a compression check of your cylinders for volumetric efficiency to see if the piston rings are bad also.

I'm not a profesional but how many miles is on the car? Is desaperance the coolant? After the car get hot is probably leaking from a bad head gasket.