Everytime your about to park, put your x in nuetral. If your x starts rolling your probably on an incline. Keep the x in nuetral with your foot on the brake. Pull up your emergency brake lever then take your foot off the brake. This will transfer the weight of the x to the rear drum brake instead of this little piece of metal in your transmission which in the longrun could snap. This might not be every tranny problem but it is preventative maintenance.

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2001 X5 4.4i WHITE-Loaded like a baby's diaper SOLD