PCM Repair service for your 2005-2007 Mercury Mariner. All part#'s accepted.

Common part numbers: 5L8A-12A650-AAD, 5L8A-12A650-LD, 5L8A-12A650-LG, 5L8A-12A650-LF, 5L8A-12A650-LH, 6U7A-12A650-BTA,  6L8A-12A650-XB

Most common issues:

• No control from pcm to ignition coils
• Shorted signal from pcm  to ignition coils
• One or all of the DTC'S: P0351, P0352, P0353, P0354, P0353, P0356
• No communication/complete failure of PCM
• No signal to Idle Air Control Valve or Cooling fans
• Incorrect VIN, Failed flashing or incorrect flash calibration programmed

Before installing your repaired PCM, Make sure you have done the following:

• Installed all new OEM spark plugs. Part number: AGSF-32W-M1
• Installed all new OEM Ignition Coils. Part number: 2M2Z-12029-AC
• checked wiring from pcm to ignition coils for any shorts

Poor quality, the wrong type or old version oem coil packs/plugs generate excessive RF interference, resulting in high voltage back-feeding into the primary circuit and damaging the electronics inside the PCM. Unless all of these parts are corrected with the proper replacements the damage to your pcm will continue. Please refer to ford technical service bulletin 10-18-10 for more information. 9 out 10 aftermarket coils/plugs will cause continued damage to your pcm. We can only guarantee our repairs if you are using the oem parts listed above. If you are using aftermarket parts and the pcm fails again there will be an additional fee for any follow up repairs.