Parking Control Module

Leesy69 · Mar 26th, 2019, 11:33

Hi all

Had a "parking aid service required" message on the dash. Diagnoticss confirmed my initial suspicion that it was reverse sensor no3 that had failed.

So I replaced sensor no's 2 & 3 just to be sure as a Volvo indi garage suggested best to do those at the same time.

Since the new sensors have been fitted though I still get the error message on the dash and the reverse sensors still dont work.

So now Im thinking I need a new control module....So my question is are they a plug & play unit? In other words can I buy a used unit off Ebay, plug it in and expect it to work? Or will it need coding to the car or something?

Thanks,

Simon.

gmonag · Mar 26th, 2019, 13:39

Assuming the new sensors are the correct ones and do work, it is more likely to be a wiring loom fault - very common. The DTC will tell you if there is a short or open on the loom. If it does prove to be the PAM, it is plug and play.

Leesy69 · Apr 2nd, 2019, 12:50

A quick browse on Ebay and it seems that there are a million and one different ECU codes printed on the PAM boxes. Does anyone know if you have to match exactly the ecu codes?

Thanks.

SwissXC90 · Apr 2nd, 2019, 20:23

The PAM sits on the LIN bus to the REM
Whilst CAN bus addressing changed over different model years, I am unsure about the LIN bus

You can replace like for like with certainty, and like for unlike with a degree of risk.

Use VIDA to check part numbers of what is for sale and determine the level of risk you will have.

Mar 26th, 2019, 11:33	#1
Leesy69 New Member Last Online: Apr 13th, 2023 15:10 Join Date: Jan 2016 Location: Stockport	Parking Control Module Hi all Had a "parking aid service required" message on the dash. Diagnoticss confirmed my initial suspicion that it was reverse sensor no3 that had failed. So I replaced sensor no's 2 & 3 just to be sure as a Volvo indi garage suggested best to do those at the same time. Since the new sensors have been fitted though I still get the error message on the dash and the reverse sensors still dont work. So now Im thinking I need a new control module....So my question is are they a plug & play unit? In other words can I buy a used unit off Ebay, plug it in and expect it to work? Or will it need coding to the car or something? Thanks, Simon.

Mar 26th, 2019, 13:39	#2
gmonag Premier Member Last Online: Jan 15th, 2024 17:24 Join Date: Jun 2010 Location: Bury St Edmunds	Assuming the new sensors are the correct ones and do work, it is more likely to be a wiring loom fault - very common. The DTC will tell you if there is a short or open on the loom. If it does prove to be the PAM, it is plug and play. __________________ Greg

Apr 2nd, 2019, 20:23	#4
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	The PAM sits on the LIN bus to the REM Whilst CAN bus addressing changed over different model years, I am unsure about the LIN bus You can replace like for like with certainty, and like for unlike with a degree of risk. Use VIDA to check part numbers of what is for sale and determine the level of risk you will have. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

Apr 2nd, 2019, 12:50	#3
Leesy69 New Member Last Online: Apr 13th, 2023 15:10 Join Date: Jan 2016 Location: Stockport	A quick browse on Ebay and it seems that there are a million and one different ECU codes printed on the PAM boxes. Does anyone know if you have to match exactly the ecu codes? Thanks.

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