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Thread: Suspension light fault RRS TDV8

  1. #1
    Join Date
    Sep 2013
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    York Peninsula SA
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    Suspension light fault RRS TDV8

    Good morning gentlemen.
    We want to go away on 4th June towing a 25 foot van. The car has just decided it wants to have a suspension fault. The car won't obey the Up and DOWN settings and most times turns the light on and says "Normal suspension only" I need the up and down to pick up the towball and to disconnect the van from the car.
    The fault codes I got this morning are as follows.
    PO407
    PO45D
    P1623
    PO191
    PO625
    PO489
    P2290
    Is anyone able to read and understand these codes and point me in the direction so I can have them fixed. We want to do over 10,000kms travelling to Darwin and then over to the east coast.
    Thanks in advance.

  2. #2
    Join Date
    Jan 1970
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    NSW SW Slopes
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    Those codes don't appear to be suspension-related. Did you retrieve them using a generic diagnostic tool or one that reads LR-specific codes?

    If the normal height only message occurs after a couple of minutes then there's a good chance that the compressor is failing to fill the reservoir quickly enough so will soon get worse causing the suspension to lower to the bump-stops. If you have to drive without getting it sorted then I suggest that as soon as the vehicle levels after start-up that you remove the engine-bay 20A suspension system fuse to prevent lowering and the passenger compartment 5A suspension system fuse to stop regular warning messages which can get quite annoying.

    A couple of the codes indicate an EGR problem so you might want to get the EGRs checked.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  3. #3
    Join Date
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    York Peninsula SA
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    Thanks Graeme. I had the EGRs replaced and fitted emulators.
    I was unaware it had a reservoir tank so does that need cleaning or is the pump failing?

  4. #4
    Join Date
    Feb 2008
    Location
    Golden Beach, QLD 4551
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    Pumps do crack on the end plate. A easy fix. Remove and glue...or purchase a new top.
    You could have a leak in the pipe work...you need to do a bit of investigating.

    Perhaps some soapy Water in a spray bottle and spray pipes, airbags, compressor.
    Need to know actual codes first. A web search should tell,you what each one means

    Good luck

  5. #5
    Join Date
    Sep 2013
    Location
    York Peninsula SA
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    Thanks Chilly. I'm going back to the mechanic tomorrow for further investigations and your suggestions will be very helpful.

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