1993 Volvo 850 L5-2.4L VIN 55 B5254SFACTORY OEM SERVICE PROCEDURE

Programing Key Code




Programing Key Code Manually
All remote controls to be used with the alarm system must be programed at the same time (up to 4 remote controls). Programing key codes can also be done using the programing box as given below.

The programing procedure is as follows:
Shut all doors, hood (bonnet) and trunk (boot).
Factory service manual diagram





Switch ignition on and off at least 5 times in 10 seconds.
Indicator LED should start to flash. Leave ignition on.
Once the indicator LED starts flashing, the first remote control must be programed within 15 seconds.
Factory service manual diagram





Press one of the buttons on one of the remote controls.
The programing is acknowledged by the indicator LED lighting up and staying on for approx. 2 seconds.
The indicator LED then starts flashing for 10 seconds.
Program the other remote control within 10 seconds, i.e. while the indicator LED is flashing.
Factory service manual diagram





Ignition off.
Test remote controls.
Factory service manual diagram





Programing Key Code With Programing Box

Factory service manual diagram




"Read new Keycode" button
Press button A "Read new KeyCode".
Display reads"READ NEW KEYCODE"
(PRESS KEY...)


Press one of the buttons on all remote controls to be programed.
Lower line of display will read "NEW CODE OK" after each remote control has been pressed.
Factory service manual diagram





NOTE: All old key codes will be erased when the first remote control is programed.


Wait until the red light by button A "Read new KeyCode" goes out.
Factory service manual diagram







Test all remote controls programed.
Repeat programing if any remote control does not work.
Factory service manual diagram



Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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