ECU beeps @ different volumes at startup????

johnd · Post by **johnd** » Fri Nov 14, 2003 12:01 pm

You know the five or so beeps the ECU gives when you startup.....well sometimes mines beeps fine, sometimes I can only just hear it, sometimes none at all.

Anyone else had this/know remedy?

Cheers

John

MatBat · Post by **MatBat** » Fri Nov 14, 2003 12:13 pm

Both of my 480's have never beeped. What year/model
is yours

strangegame · Post by **strangegame** » Fri Nov 14, 2003 12:34 pm

same here ive had a 90 now got a 92 never beeped on start up

johnd · Post by **johnd** » Fri Nov 14, 2003 1:24 pm

Hi,

It's a 94. I used to have a 91 ES that never beeped. I know these definitely beep on startup but I'm just bemused by the volume differences

Cheers

John

Gimle · Post by **Gimle** » Fri Nov 14, 2003 2:05 pm

Was this prior to your demist problems?

johnd · Post by **johnd** » Fri Nov 14, 2003 3:26 pm

Hi Gimle,

It certainly was. Any connection? .....or lack of it!!! (Pardon the pun!)

John

MatBat · Post by **MatBat** » Fri Nov 14, 2003 3:37 pm

There is a 'beep' when you hold down the rear demister button for a few seconds, on all 480's. This could indicate a short-circuit,

P.S checked the wires yet?

johnd · Post by **johnd** » Fri Nov 14, 2003 3:40 pm

I will do now!

Cheers Mat

martinholmesuk · Post by **martinholmesuk** » Fri Nov 14, 2003 4:13 pm

93 turbo, Mine beeps !

dragon · Post by **dragon** » Sat Nov 15, 2003 11:55 pm

The 480 will beep 5 or 6 times when you turn the ignition if your seatbelt isn't plugged in (and assuming your pressure sensor in your seat works) - to the non beeping people, does your seatbelt-not-plugged-in light come on when you dont have the belt plugged in? If not then thats why you have no beep

David Thornber · Post by **David Thornber** » Sun Nov 16, 2003 8:18 am

Mine present one beeps ('93 car) but my previous 2 didn't ('87 and '92). If I remember, the seatbelt light on those flashed whenever a seat was in use but the seatbelt wasn't.

volvofox · Post by **volvofox** » Sun Nov 16, 2003 10:58 pm

the Beep comes from the CEM, not the ECU. Maybe you connected the two contoller connectoprs to the control mode, and you are actually doing (whats left over/or part of the test mode??????)
Maybe else your CEM is getting senile.

This in the worst case. In any other it could be the belt warning, as I understand now some new 480 owners have.

Luck
JPF

kiboomiz · Post by **kiboomiz** » Mon Nov 17, 2003 8:21 am

my car (95 celeb) also has a goold old beep at me if i don't put my seatbelt on the instant i turn the ignition on, and i also get the problem where occasionally the beeping is hardly audible....

it also affects the beeping when the indicators are on

Gimle · Post by **Gimle** » Mon Nov 17, 2003 1:28 pm

Well I had a failing CEM which started with demist problems... But since you had beeps prior to your problems I don't have a clue what problem might be, sorry.

In any case I hope it isn't your CEM, cause that isn't cheap...

wedge69 · Post by **wedge69** » Mon Nov 17, 2003 3:52 pm

My demist has stopped working 'cos of a dodgy CEM (or so the Volvo mechanic told me). They cleaned up the connections and it worked again, but they said I would need a new one if it went again. Which it did. Yesterday. Is it easier just to live without a heated rear window then?

Ernie · Post by **Ernie** » Mon Nov 17, 2003 4:02 pm

Strange ... the volume of the beeps is getting lower and lower...
A few months ago I could easily hear them (even annoying when using the direction indicator...), but now I can hardly hear the beeps.

I also have the impression that there is more than one beeper, since I hear beeps at different frequencies (am I correct?)

I hear beeps when:
- using the direction indicator
- switching off the engine
- leaving the pop-ups up when switching off the engine and taking uot the key