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Thread: four beeps on start up.....alarm siren battery?

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    four beeps on start up.....alarm siren battery?

    I got the four beeps warning when I started the car this morning, I have started the car a few times since without any beeps. Searching on this fantastic forum it sounds like the alarm siren battery backup is the issue. I've seen a few posts in the A3 forum suggesting a new unit from Audi is something like £183! and also seen a very good "how to" convert the existing unit to normal AA batteries.
    A few questions:-
    1. What are the consequences of ignoring it? Does it link to the immobiliser and will it stop me from starting the car at some point?
    2. I dont trust myself (or have the time) to replace the unit myself, has anyone had this replaced by an indi/dealer and if so what was the total cost?
    I understand that labour rates vary but a ball-park number would help me decide how I prioritise other work on the car.
    Thanks in advance.
    A4 (B6) 2.5TDI QUATTRO SPORT AVANT

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    marktdisport's Avatar
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    four beeps on start up.....alarm siren battery?

    Does it show the brake warning symbol also if so most say its your battery dying not the alarm siren battery...
    A4 TDI 130 SPORT..
    now sold but still in the family, gone back in time to the cupra R again..

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    If the beeps are quieter and from the boot then it's probably the siren batteries. But as Mark says, if they're from the dash and accompanied by the red ! mark it's low voltage at the ABS pump. You often see that when starting on a cold morning, and it's usually the sign the battery isn't as strong as it once was.
    Ingolstance Read about my A6 HERE.

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    Thanks chaps. No brake warning light so it's most likely to be the siren battery. The main battery is only about 18 months old too. There's no fault codes either.
    A4 (B6) 2.5TDI QUATTRO SPORT AVANT

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    The batteries gave up the ghost in my siren, when I dismantled it to replace the batteries I found they had leaked and screwed up some tracks on the PCB.. great... anyway its still not fitted and doesn't affect the car really, apart from the alarm making no sound of coarse, and the LED in the door saying there is an alarm fault....
    Mark

    2001 A4 TDI 130 SE, takes me to work
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    Mine done 4 beep and brakes code!
    So is this a sign that it needs replacing or as its freezing with snow=cold.
    Any spec on the battery i need and prices,easy job id of thought?

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    four beeps on start up.....alarm siren battery?

    Quote Originally Posted by deano1978 View Post
    Mine done 4 beep and brakes code!
    So is this a sign that it needs replacing or as its freezing with snow=cold.
    Any spec on the battery i need and prices,easy job id of thought?
    Mine did it quite often last year when it was freezing but it's only done it once this year and I'm still on the same battery. I wouldn't worry about it.
    deano1978 likes this.
    Chris "the machine" Green.
    2004 Audi A4 1.9tdi Sport Quattro Avant

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    I'd agree really, as long as the car turns over and fires willingly enough.

    It's not a difficult job, but the battery is quite weighty and you need to lift it out of the bulkhead.
    Ingolstance Read about my A6 HERE.

 

 

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