BMW 318/325/M3/525/535/M5 1989-1993 Repair Information

DME Control Unit

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REMOVAL & INSTALLATION



E30 3 Series
  1. Turn the ignition switch OFF .
  2.  
  3. Open the glove compartment and remove the pins from the straps so the door drops down.
  4.  
  5. Remove the upper trim piece to access the DME unit.
  6.  
  7. Push the plug retainer back and remove the plug. Remove the 4 bolts and remove the DME unit.
  8.  

To install:
  1. Install the DME unit and the 4 bolts.
  2.  
  3. Install the plug onto the DME unit and snap the retainer into place.
  4.  
  5. Replace the trim and the glove compartment door.
  6.  

E36 3 Series

See Figures 1, 2, 3 and 4



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Fig. Fig. 1: Pull the plastic rivets out of the cover-E36 3 Series



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Fig. Fig. 2: Pull back the rubber cover to expose the DME compartment cover-E36 3 Series



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Fig. Fig. 3: Remove the DME compartment cover screws-E36 3 series



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Fig. Fig. 4: DME is visible after pulling back the wiring harness and cover-E36 3 Series

  1. Turn the ignition switch OFF .
  2.  
  3. The DME control unit is mounted behind a panel on the firewall at the right. Remove the 3 press in plugs holding the shield over the DME cover. Pull the shield off the cover.
  4.  
  5. Remove the 4 screws holding the cover onto the firewall. Move the cover with the wire away from the opening.
  6.  
  7. Pull the locking clamp out and pull the connector off the DME unit. If there are 2 control units, the upper control unit is for the automatic transmission and the lower is the DME.
  8.  
  9. Pull the DME unit from the clips. Do not loosen any of the bolts.
  10.  

To install:
  1. Install the DME unit and connect the plug. Lock the connector down.
  2.  
  3. Install both covers. Check the routing of the wiring harness.
  4.  

E34 5 Series
  1. Turn the ignition switch OFF .
  2.  
  3. The DME control unit is mounted in the electronics box at the rear, right side of the engine compartment.
  4.  
  5. Remove the 4 screws holding the cover and lift off. the DME unit is the rearmost control unit.
  6.  
  7. Pull up the connector clip and remove the connector.
  8.  
  9. Remove the 2 screws holding the control unit and lift the control unit out.
  10.  

To install:
  1. Install the control unit and the mounting screws.
  2.  
  3. Connect the plug and press the clip into place.
  4.  
  5. Install the cover on the electronics box.
  6.  

 
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