How do you replace side mirror motor - 1998 Oldsmobile Regency

Check for voltage on the vertical power output at the switch when operated. If no voltage, try lubricating the switch contacts. Still no voltage? Replace the switch.
If there is voltage, open the mirror assembly and check for voltage there. Is there voltage? Do you hear the motor sound when you operate the switch? If you hear a motor sound but the mirror does not move, it is a mechanical problem which can be easily fixed. If there is no motor sound despite the presence of voltage, the vertical axis motor has burned out or seized. Try lubricating the mechanism and, if still a no-go, replace the motor or the entire mirror assembly.

Not sure of the X5 but on the M3 the mirrored glass portion of the driver side view mirror just "popped" onto the motor carrier in the housing. It was a little nerve racking removing and replacing the glass (my motor had died) but with care its possible. Suggest going to RealOEM.com site and enter vehicle vin information then go to vehicle trim and then outside mirror for details of assembly

I think you should go for manual first after that it would be easy for you to solve your problem. I had visited this site past 2 months before for my vehicle and find it quite helpful may be you will also get something useful here Best Manuals

Could be a bad connection or switch could need replaced or motor that moves mirror needs replaced...I would start by having power going into mirror checked that is not working to make sure it is getting power and if so this would indicate that it is in mirror motor....hope this helps and good luck and please rate my post if you find this info helps..

You can usually just replace the mirror, any commercial auto-glass store has the glass you need. sometimes it is necessary to replace the mirror and its backing (a plastic frame which snaps into the adjustable motor) you don't need to replace the whole mirror unless the housing is broken.

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i believe this is what you are looking for hope this helps.
http://www.wjjeeps.com/mirrors2.htm
i could explain it but this is better cuz you may want to print it out.
Happy New Year

adjust your mirror to center with your hand manually and try the switch again. if it still dosn't work switch to the other side mirror and see if the other side goes up/down. if it does then replace the side that's not going up and down....you have to replace the whole assembly. can't just replace motor.

Each mirror has a motor. This could be the problem. The driver's side mirror is adjusted more often and over time the motor wears out. Call a few of the parts stores in your area to compare prices. Depending on the cost to replace it through a shop you may save a few dollars by picking up the part and taking to a certified mechanic who can replace the part for you.

It is a stuck motor. Water gives rust inside housing. Remove mirror and clean motor and components. This is a well known error for H2 mirrors.

There are two tiny motors in each mirror. one for up/down. One for side to side. They have jack screws (plastic) that fit into the motors.

You can manually put your hands on either side of the mirror and force adjust it. If you hear a ratcheting sound, the jack screws are OK. Then repeat with hands on top and bottom.

If you hear ratcheting and mirror stays where you stop it, that means one of the motors is bad. The motor assembly is available as a separate part.

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Mirror Motor—Crown Victoria, Grand Marquis
Removal and Installation

1. Disconnect battery ground cable. Refer to Section 14-01 .
   

1. Remove outside Rear View Mirror Glass as outlined.
   

1. Remove Outside Rear View Mirror as outlined.
   

1. Remove two screws from outside rear view mirror motor.
   

1. Remove outside rear view mirror housing from outside rear view mirror base.
   

1. Disconnect connector and remove outside rear view mirror motor from mirror housing.
   

1. To install, reverse Removal procedure.
   

Might be cheaper to buy used irror at car-part.com. Look for * to find page with cheapest part. Or, EBay. Good luck