Heater setting off the alarm

[Skyliner33]

I have had my diesel heater fitted for over 4 years.
Strangely the last few times I have used it, the heater has set off the alarm.

I cant work out why this is now happening.

Any suggestions, or does anyone else have this problem?

 

[Bargy62]

I have had my diesel heater fitted for over 4 years.
Strangely the last few times I have used it, the heater has set off the alarm.

I cant work out why this is now happening.

Any suggestions, or does anyone else have this problem?

spiders coming out when it gets warm

 

[Dellmassive]

VCDS should show you that last 4 or so activations from the alarm.

is its powered from your leisure battery?

 

[Skyliner33]

VCDS should show you that last 4 or so activations from the alarm.

is its powered from your leisure battery?

No. Powered from starter. It’s OEM alarm.

 

[Skyliner33]

spiders coming out when it gets warm

Nope. Not that.

If I double click the alarm it dies t go off. So I’m thinking it must be the internal sensors.

 

[Lubrown]

Are the alarms happening since you modified the ductwork or whatever it was you were looking at doing in another thread?
Wonder if the way the hot air moves around is now ‘visible’ to whatever interior sensors the alarm has?
Or is this happening while the alarm isn’t set?

 

[Dellmassive]

No. Powered from starter. It’s OEM alarm.

probably LOW BATTERY alarm.

the heater causing rapid drop in starter battery voltage triggering alarm?

running a derv heater from the starter battery is never a good idea and will lead to trouble.

your starter battery 5 years old now? - original?

AGMS are rated for 3-5years - so yours maybe due for a replacement.

 

[Skyliner33]

probably LOW BATTERY alarm.

the heater causing rapid drop in starter battery voltage triggering alarm?

running a derv heater from the starter battery is never a good idea and will lead to trouble.

your starter battery 5 years old now? - original?

AGMS are rated for 3-5years - so yours maybe due for a replacement.

No, the heater runs off the leisure. Alarm is off the starter. Misunderstanding. .

 

[Skyliner33]

Are the alarms happening since you modified the ductwork or whatever it was you were looking at doing in another thread?
Wonder if the way the hot air moves around is now ‘visible’ to whatever interior sensors the alarm has?
Or is this happening while the alarm isn’t set?

That crossed my mind but the heater outlet is in the same position within a few mm or so.

 

[Dellmassive]

VCDS scan then to see last alarm activations.

will tell you if itd doors, battery, tilt, ultrasonics etc

Thread 'Erroneous alarm triggers [Resolved]'

2 Nov 2021

I purchased a used T6 for my business a couple of months back, and it's giving us some real issues. It has been back with the dealer three times each for a week visit; due to the alarm sounding for no apparent reason.

There was an issue with the starter battery that I pointed out the first time it went back; the voltage never went above 11.8v. So they 'conditioned' the battery, confident that it would fix the alarm, but it did not. The battery didn't hold the charge.

Van went back in, and they agreed to a new battery, I went to collect it after the weekend, and I caught the workshop...

• FYPO
• alarm sensor steering wheel
• Replies: 18
• Forum: Electrics, Lighting, ICE, Security

 

[CAB]

Something moving in the blown air?

 

[Pewt]

Hanging air freshener ?

 

[tommy_t6.1]

Moisture in the air? When the van warms up maybe its condensing on the sensor?

 

[drinfinity]

Deffo look at the alarm history. This week I traced daughter’s Vw Beetle alarm to a tailgate sensor, which turned out to be green and crozzled, because it showed up on the last four alarms.

In the van it was a daddy-long-legs, but I got that with a bug catching lamp thingy.

 

[Skyliner33]

Thanks for all the suggestions. Will do a scan when I get some time in the week.