S5 rattle at 1200rpm - Audi A5 Forum & Audi S5 Forum
 
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post #1 of 7 Old 14th May 2019, 12:22 AM Thread Starter
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S5 rattle at 1200rpm

Still getting used to my S5 and I've noticed a rattle, like an electronic rattle at 1200rpm, either on a very light throttle or when the revs come down to idle.

Is this normal? Is it the idle motor or something?

S5 - Standard, but not for long...

2014 Audi S5 - current
2009 Audi a5 3.0TDi Tip Sport
2003 Audi A4 1.9 TDi
2004 MG ZT 190 2.5 V6
1997 BMW 328i Coupe M Sport
1994 Rover Coupe Turbo Targa top (Tomcat)
1988 Peugeot 1.9 GTi
1982 Metro 1.3s (MG herringbone/velour seats)
1984 Talbot Solara 1.6
Yamaha R6 - Gone
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post #2 of 7 Old 14th May 2019, 01:08 AM
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Dave, mine does the exact same thing.
With the windows up I can't hear it but with windows down I can, and even more so if I'm next to a building or cars so the sound is bounced back more.
It is more apparent when slowing to a stop it say creeping round a carpark.
Im pretty sure mine is exhaust related, maybe even a heat shield.
When I was in for an mot I asked the mechanic to have a poke around and he thought it might be the cats rattling.
I've yet to get to the bottom of it but mine is slowly getting worse and it is quite annoying especially as I'm sure other people must be able to hear it when I'm driving slow, say through a town centre.
Maybe a full exhaust system is on the cards. 😬
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post #3 of 7 Old 14th May 2019, 05:13 AM Thread Starter
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Hi SmokeyJoe

It's defo some electronic motor type device and not metallic like a shield or the exhaust - but if you want to use that as an excuse to get a new zorst, then go for it.

It's like a baby's plastic rattle or a rattle snake. I only noticed it creeping down the drive then coming off the throttle, as it goes past 1200rpm it does it.

S5 - Standard, but not for long...

2014 Audi S5 - current
2009 Audi a5 3.0TDi Tip Sport
2003 Audi A4 1.9 TDi
2004 MG ZT 190 2.5 V6
1997 BMW 328i Coupe M Sport
1994 Rover Coupe Turbo Targa top (Tomcat)
1988 Peugeot 1.9 GTi
1982 Metro 1.3s (MG herringbone/velour seats)
1984 Talbot Solara 1.6
Yamaha R6 - Gone
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post #4 of 7 Old 14th May 2019, 12:42 PM
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It is a kind of baby rattle noise on mine, I'm not 100percent if it's the exhaust or not. I can feel a slight shuddering as the car gets down to about 1200rpm and I get this noise at the same time. Then it goes quiet again below 1200. It's very annoying now the weather has improved and I'm driving around with the windows down more often. Maybe I should swap the exhaust and if it's not that hopefully it will drown the rattle out anyway lol.
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post #5 of 7 Old 15th May 2019, 04:28 AM
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Sorry guys, I have no ideas. I haven't noticed anything like that on mine, and I am rather paranoid about unexpected noises.

Current: 2015 Audi S5 sportback black edition (MRC stage 2)
Previous: 2001 Audi B5 S4 avant (modified)
Previous: Subaru Impreza WRX (wrapped around a tree)
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post #6 of 7 Old 15th May 2019, 10:52 AM Thread Starter
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It does it even stationary on mine. with the driver's door open and when it has stopped beeping at you to turn ignition off, raise revs to about 1500rpm and let hem fall back down and when it passes 1200rpm it rattles.

It's definitely something like a modulation motor, it's too 'light and plasticy' to be anything mechanical. I hope.

S5 - Standard, but not for long...

2014 Audi S5 - current
2009 Audi a5 3.0TDi Tip Sport
2003 Audi A4 1.9 TDi
2004 MG ZT 190 2.5 V6
1997 BMW 328i Coupe M Sport
1994 Rover Coupe Turbo Targa top (Tomcat)
1988 Peugeot 1.9 GTi
1982 Metro 1.3s (MG herringbone/velour seats)
1984 Talbot Solara 1.6
Yamaha R6 - Gone
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post #7 of 7 Old 15th May 2019, 12:06 PM
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Does it on mine stationary too. Doesn't have to be in gear and exactly 1200rpm.
I'm pretty sure it's exhaust related on mine but really need it up on a lift to have a good poke around, seems to be more obvious when hot. I'll suss it one day hopefully because I hate rattles.
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