Key fob only locks/unlocks when close to the front of bus

[Uncle_Fester]

Hello all, this is a bit of an odd one, but, as per title.
Bus will only lock and unlock if I'm near the front doors, say within 6 feet, won't work from behind the back doors.
This is a recent development, has been working fine for the last year's or so since I've owned it.
I have one original key and two new keys, all do the same, so I'm guessing it's not the keys.
Any suggestions would be appreciated..
Thanks

Fester

(Mk7 2.2tdci jumbo highroof twin wheel 17 seat minibus.)

[Altransit]

That's an interesting question, that's been normal for my van ever since I've had it, I've never been able to unlock the rear doors when standing at the rear doors, and it won't unlock from across a road, unless it's narrow. That's with using any of the 3 keys that I've had in that time.

If it isn't the keys, presumably its something to do with the receiver above the headlining

[Uncle_Fester]

Hmm, could it be the reciever getting "weak"?
All I've done recently is replace the overhead interior light bulbs with led bulbs and strangly the following day fuse 78 (central locking) blew... I replaced it and all seems OK apart from the reduced range on the key fob... which started as an issue before the fuse blew.
Today I replaced both batteries as one was only giving about 11.5 volts (don't know which but starting always seemed a little slow, so likely the stater battery) but the low fob range remains..


(Mk7 2.2tdci jumbo highroof twin wheel 17 seat minibus.)

[Altransit]

Hmm, could it be the reciever getting "weak"?
All I've done recently is replace the overhead interior light bulbs with led bulbs and strangly the following day fuse 78 (central locking) blew... I replaced it and all seems OK apart from the reduced range on the key fob... which started as an issue before the fuse blew.
Today I replaced both batteries as one was only giving about 11.5 volts (don't know which but starting always seemed a little slow, so likely the stater battery) but the low fob range remains..

I wonder if it's worth taking out the cab lights and disconnecting the wires? See if that makes any difference? I might try that with mine next week as this weekend is busy busy?

Unlocking and starting are always a bit sluggish when the batteries get low, that's why I charge mine up every couple of weeks (The van doesn't go anywhere these days) But the low voltage doesn't seem to make the remote range any less, or better when charged.

[Uncle_Fester]

Hmm, could it be the reciever getting "weak"?
All I've done recently is replace the overhead interior light bulbs with led bulbs and strangly the following day fuse 78 (central locking) blew... I replaced it and all seems OK apart from the reduced range on the key fob... which started as an issue before the fuse blew.
Today I replaced both batteries as one was only giving about 11.5 volts (don't know which but starting always seemed a little slow, so likely the stater battery) but the low fob range remains..

I wonder if it's worth taking out the cab lights and disconnecting the wires? See if that makes any difference? I might try that with mine next week as this weekend is busy busy?

Unlocking and starting are always a bit sluggish when the batteries get low, that's why I charge mine up every couple of weeks (The van doesn't go anywhere these days) But the low voltage doesn't seem to make the remote range any less, or better when charged.

It might be worth a try, put it back to "factory" see if that helps.
I'll let you know what happens

(Mk7 2.2tdci jumbo highroof twin wheel 17 seat minibus.)