'Rear door open alert' won’t shut up!!

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unsunghero
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'Rear door open alert' won’t shut up!!

Post by unsunghero » Fri Jan 10, 2014 3:45 pm

My Caddy keeps alerting me that its rear doors are open, however they are not!! I have tried slamming the doors shut which works for a little while but the bloody alert comes on the dash after I go over a bump or if it feels like making itself known again. I could easily ignore the reading on the dash but it’s the ‘bing’ noise of the alert does my head in as it goes off every 20-30secs.

Does anybody know a quick fix for this or where I can find the pesky sensor?

Turning the radio up louder will not suffice, because I’ve already tried this! :lol:

Thanks in advance

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Doc
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Re: 'Rear door open alert' won’t shut up!!

Post by Doc » Fri Jan 10, 2014 6:55 pm

This old chestnut again. :)
You will need a replacement switch for your side door. Its the small pushy in thingy below the contacts panel on the door frame.
£20 is from VW or TPS.
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chezzy71
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Re: 'Rear door open alert' won’t shut up!!

Post by chezzy71 » Fri Jan 10, 2014 6:58 pm

my interior light sometimes comes on when i accelerate pretty hard, same thing, i just cleaned the contacts and spayed them with gt85.. worked for me
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Doc
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Re: 'Rear door open alert' won’t shut up!!

Post by Doc » Fri Jan 10, 2014 7:07 pm

OK, well take the switch out and if slamming the door hasn't goosed it, clean the contacts. ;)
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I have genuine VCDS Hex V2 & VagCAN Pro for any of your programming needs.

vwbaz
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Re: 'Rear door open alert' won’t shut up!!

Post by vwbaz » Fri Jan 10, 2014 11:24 pm

I had this with my side door after I upgraded to the highline clocks. Was ready to order a new switch, but I adjusted the bottom runner a tiny bit so the bottom of the door is held tighter, not had a problem for the last couple of thousand miles :D

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Re: 'Rear door open alert' won’t shut up!!

Post by NornIron » Tue Jan 14, 2014 8:07 pm

I don't have an audible alert, just the rear (barn) door warning light in the instrument cluster. Over the past few months I've had days when this won't go out (no matter how much door slamming I do!) coupled with the interior lights staying on... could this be related to a side door switch, or is there a known issue with barn door switches?
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Re: 'Rear door open alert' won’t shut up!!

Post by the long one » Tue Apr 22, 2014 9:53 pm

I have the opposite to this where the new cluster (facelift highline) shows the rear doors closed when open but when on the first catch (slightly open) it shows open . Has anyone got any ideas on this ? Thanks in advance
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Re: 'Rear door open alert' won’t shut up!!

Post by the long one » Sun Apr 27, 2014 5:26 pm

Checked bottom nearside door catch - found to be all correct so when "shorting" between cores at switch end only the slightly open part of the connection seems to work therefore the cable to the fully open must be damaged - does anyone know where the nearest join is ?
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Re: 'Rear door open alert' won’t shut up!!

Post by scottalan1993 » Wed Feb 26, 2020 5:02 pm

@the long one

I have this same issue 58 caddy swb, exact same symptoms as this . Has anyone a solution?

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Re: 'Rear door open alert' won’t shut up!!

Post by DJOHALL » Fri Feb 28, 2020 11:41 pm

With the Barn Door, the lower latch on the main door has a switch in it which can go bad. I kept getting the notice on the dash randomly and interior lights turning on. Also the van was fairly new and I don't use the rear doors that much at all compared to a proper working van. Cost me about €30 for the new latch.

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Re: 'Rear door open alert' won’t shut up!!

Post by i5te » Fri Mar 27, 2020 3:07 am

My first caddy did this, turns out I had a crack on the top door brake light. Fitted a new brake light and never seen the error again, thank god.

Annoying thing is, it used to unlock its self too and sound alarm!

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Re: 'Rear door open alert' won’t shut up!!

Post by scottalan1993 » Sat May 30, 2020 10:39 am

I fixed the brake light also, this had cured the tailgate open light but still locks itself and sets of the alarm. :? :?:

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Re: 'Rear door open alert' won’t shut up!!

Post by louishawkins » Tue Nov 17, 2020 8:37 am

Hi all,

This happened to me yesterday following heavy rain. Barn doors showing alert 'open' when closed.

After taking the gubbins of the rear near side door off, i found the culprit.

Water sits in the catch well around the stop on the rear bumper, when you drive up a hill this runs back in to the bottom door latch. This eventually gets in to the door sensor at the very bottom of the door.

Just take the two H40 (i think) bolts out the bottom of the door and you'll find it.

Unclip, spray out with an air line both male and female, load up with heavy grease to prevent re-occurrence, pop it all back together, smack its arse and away you go.

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