2002 Range Rover - Alarm System enabled in very hot weather
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Thread: 2002 Range Rover - Alarm System enabled in very hot weather

  1. #1
    FRESHMAN ROVER
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    2002 Range Rover - Alarm System enabled in very hot weather

    I am having a problem with my 2002 RR in that the alarm system disables the vehicle in very hot weather (the vehicle has been parked in the sun for over 4 hours). The alarm system activates and I am not able to turn over the ignition without the siren activating. Has anyone else had this issue with interior heat of the vehicle causing the alarm system to disable the vehicle. I live in Texas and the summer weather can reach over 100 degrees daily. My only fix to this point is to open the hood and disengage the battery, with the alarm blaring I might add, to shut down the system and disable the alarm. Then the vehicle operates properly and the ignition turns over. I could use all truly helpful suggestions (I.e. moving out of Texas is not an option!). Thank you.

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  3. #2
    SITE ADMINISTRATOR RRToadHall's Avatar
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    Let's back up a bit here. OP: you say you are in Texas and have a 2002 L322?

    For folks in the US we didn't get the L322 until the 2003 model year even though they were 2002 production. Do you have a 2002 P38 or a 2003 L322?

    Same advice applies for both as it's a common issue across alot of LR products. In both cases you can just disconnect the sensor/switch to verify the issue. From their you can decide if it is worth the bother to replace it.
    How come "you're a peach" is a complement but "you're bananas" is an insult?
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  4. #3
    FRESHMAN ROVER
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    The 2002 RR is a P38. Where would I find the hood alarm sensor switch? As stated before the issue is more that the engine is disabled by the heat and will not turn over. The siren is more of a nuisance until I open the hood and detach the battery. I still have to monkey around with the battery until I hear the passenger side door lock click open. The passenger door lock would not open when I use the key manually or remotely to open the driver side door. Then I am able to enter the vehicle and turn over the engine and be on my way. We are now 3 months into cool weather in North Texas and I have no issue with the vehicle starting on demand. It still sits in the same parking lot at work for over 4 hours. My thought is that the vehicle's interior heat of the summer is manipulating the on-board computer and disabling the engine. I will look for your response. Thank you in advance.

  5. #4
    SITE ADMINISTRATOR RRToadHall's Avatar
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    Moved to correct forum

    The hood alrm sensor is part of the right hand latch. Usually an alignment will solve the issue or you can simply disconnect it.
    How come "you're a peach" is a complement but "you're bananas" is an insult?
    Why are we allowing fruit discrimination to tear society apart?

  6. #5
    FRESHMAN ROVER
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    Thank you. This still doesn't answer my biggest mystery. Is the interior heat during the summer causing the "engine disabled" warning/alarm to occur?

  7. #6
    JUNIOR ROVER Orangebean's Avatar
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    No, but it could be causing the hood to expand and open the switch! Have you tried just unplugging it? No need to bridge.
    Currently caring for (in order of attention demanded):

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  8. #7
    FRESHMAN ROVER xrav22's Avatar
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    That same thing happened when my drivers door latch went out. when you try to open it and the alarm goes off look at the dash and it will tell you what triggered the alarm. For me it was left driver door and the alarm was on I solved it by putting a new drivers door latch .
    1997 Range Rover 4.6 HSE
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  9. #8
    FRESHMAN ROVER
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    Thank you both for responding. I will disconnect the sensor and eagerly await the hot summer days to see if this does the trick. It could also be the driver door latch since it has been giving me trouble of late.

  10. #9
    SITE ADMINISTRATOR RRToadHall's Avatar
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    Re: 2002 Range Rover - Alarm System enabled in very hot weat

    If you know that your drivers latch has issues, why on earth are you waiting? Avoiding door latch issues is like begging for Lourde Lucas to infest your alarm system with gremlins. Instead of a quick fix for a latch issue you could end up with hundreds of dollars in BeCM unlocking and shipping costs paired with several days with a Rangie out of commission.
    How come "you're a peach" is a complement but "you're bananas" is an insult?
    Why are we allowing fruit discrimination to tear society apart?

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