Rover 45 lock/unblock on hills - MG-Rover.org Forums
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post #1 of 17 (permalink) Old 01-05-2017, 13:09 Thread Starter
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Rover 45 lock/unblock on hills

Hello ,

When the car is on a hill/downhill(30-40%+) its very hard to unlock it.

Anyone has this issue?

The battery on the prob is new.

Its very strange that only happens on hills/downhills because on normal road +-20% its normal with the first without any issues.
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post #2 of 17 (permalink) Old 01-05-2017, 17:28
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This is odd one. Not heard of such issue. What year is yoir Rover 45?
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post #3 of 17 (permalink) Old 01-05-2017, 19:55 Thread Starter
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rover 45 2005 facelift , i am afraid to lock it on downhills :P
The last time i couldn't unlock and believe i tried everything.
Eventually battery died because after manual unlock the immobilizer disabled the engine everytime i started.
With dead battery i left the car in "peace" for 5 hours and when i get back it unlocked with the control :P
I charged the battery and also replaced because i thought this was the issue , but still is hard to unlock it on downhills i must do circles around the car and try every spot just to unlock it :P
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post #4 of 17 (permalink) Old 02-05-2017, 05:01
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You might want to contact Technozen because I do not think your problem is with downhill/uphill parking, but with Pektron system in your car.
Technozen is member of this forum, but you can also find him in his own website: https://www.technozen-electronics.co.uk/
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post #5 of 17 (permalink) Old 02-05-2017, 07:36
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Water in alarm sounder ? I have never heard of this fault on any forum, what I am thinking is if there is a bit of water in alarm sounder when on a hill it gathers up making a contact on the circuit board causing fault. I am probably wrong but can't think of any thing else at the moment and the later alarm sounder do suffer from water ingress. Have you had the alarm go off at all as this is another fault when water gets in. The BCU behind the radio doesn't suffer with water getting in on 45 unlike the 25 so I wouldn't think it's that.
You can check the alarm sounder which is mounted under the coolant tank, it two 10 mm bolts holding it in position. You can carefully lift tank to one side to remove alarm which is under neath or just unplug alarm replace tank and try locking on hill to see if it works.
If it's not the alarm sounder I haven't got a clue as I have no idea why parking on an incline would cause a fault in electrics.
Hope you get it sorted.
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post #6 of 17 (permalink) Old 02-05-2017, 18:36 Thread Starter
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I think that my rover uses the horn as alarm sounder since the last time i got stuck i removed the connector from the horn (right side of the bumper) because it was noon and the manual unlock triggered the alarm.

Its really strange and every mechanic i ask doesn't have a clue, maybe it has some sensor and the car thinks that someone trying to steal it with towing ? (maybe this sensor is going bad or something)

Others blamed the fob but ofcourse i have tested both of my fobs and the car Locks/Unblocks 100% by one click on straight road.

And also i can't explain how the car unlocks using the fob after 5 hours in the same spot(and with Drained Battery because of fail attempts to start it / disable the immobilizer!) , i should rename my rover into Christine.
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post #7 of 17 (permalink) Old 02-05-2017, 18:43
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In original equipment there is no sensor to measure if the car ks on slope or no or if it is being towed.
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post #8 of 17 (permalink) Old 02-05-2017, 23:13 Thread Starter
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I did take a look on technozen and maybe this is the issue? Lack of remote fob transmission range.

I will just keep monitoring it for now , and always have the code for manual unlock near me
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post #9 of 17 (permalink) Old 03-05-2017, 16:00
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Facelift models don't use the horn as alarm sounder there should be a unit under coolant tank, as I said these are very prone to water getting in causing many faults with locking, alarm and hazards. I had alarm going off when I was driving if I went around corners, up or down hill. This was due to water moving and making a contact on circuit board. I replaced it with one from a mk1 which don't let in water lol.
It is very odd though as I haven't seen this before.
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post #10 of 17 (permalink) Old 04-05-2017, 12:05 Thread Starter
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I will recheck under coolant tank for any alarm equipment.

My rover uses the horn for alarm since last time it was stucked i just removed the horn so i can work to find the issue without the noise
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post #11 of 17 (permalink) Old 04-05-2017, 16:46
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Maybe export cars didn't get the insurance approved alarm, not sure but uk models had to have a thatcham approved alarm with battery back up. I really hope you get lucky with this as it's the strangest fault I have heard on any of the mg rover forums lol.
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post #12 of 17 (permalink) Old 04-05-2017, 23:49 Thread Starter
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I will try to find the issue the next time it will stuck , thanks for the help!

By the way one of my friend asked his mechanic :
Friend: If we called you and told you the problem what you will do? (told him it was Rover)
Mechanic: I would tell you to bring it here.
Friend: Then what you will do to fix it? (towing)
Mechanic: Points his finger in an empty parking spot and tell him , i would keep it there overnight and tomorrow it will be ready to take it home.

I just cried from laugh :P
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post #13 of 17 (permalink) Old 05-05-2017, 21:43
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Export models were not fitted with the alarm sounder, using the horn instead.

If it were a fob radio reception fault it would be present equally for locking or
unlocking and the reduction in range is permanent and rarely varies, I cannot
see how it would be influenced by the car being parked on a hill.

Does the problem only happen if the car is parked in a certain location? Could
there be a local source of radio interference?
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post #14 of 17 (permalink) Old 06-05-2017, 03:37
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i would be more inclinded to think their is a loose connection that is strained or put under stress when the car is at certain angles ?.
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post #15 of 17 (permalink) Old 06-05-2017, 09:56
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Is the car standard ? Or does it have any after market electrics fitted like a stereo, sat nav or camera that are hard wired. If so the wiring may have been cut causing a bad connection. I would check everything is secure behind dash etc looking for any loose electrical connections.
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post #16 of 17 (permalink) Old 06-05-2017, 18:58 Thread Starter
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I will test all the connection just to make sure.

What i noticed yesterday its that when i start the Car the Light on the Clock doesn't come ON , but after some time due to bad road it comes on (i tested and with my hand slightly hitting the center dash and it comes on)
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post #17 of 17 (permalink) Old 06-05-2017, 20:12
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that could just be a bad bulb , the filaments probably broken and reconnects when going over bumps .
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