456 slowdown light - Ferrari Life
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post #1 of 3 Old 10-25-2012, 06:05 AM Thread Starter
Join Date: Sep 2007
Ferrari Life Posts: 14
456 slowdown light

On my 456 the 7-12 SLOW DOWN light flashes sometimes evan when I am going slow.
Do I need to have this attended to immediately?
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post #2 of 3 Old 10-25-2012, 07:37 AM
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Join Date: Jun 2012
Location: Newport News, VA
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Definately. I had a similar problem with my 328 and this is what I learned:

The light really has nothing to do with speed. When it comes on, that means one of the cats is overheating. When that happens, one bank of cylinders shuts down. Symptoms of that are low power (since half of the cylinders aren't operating) and a strong fuel smell (because the fuel that should be going to those cylinders and combusted is now going straight into the exhaust).

If you are having those symptoms, take it in ASAP. It could just be a faulty sensor, or it could be an actual failure. I did not have those symptoms, but I took it in anyway. My light seemed to come in completely randomly. The techs could not reproduce the light, but the lead tech said (based on experience) that the cause was likely a failed ECU. I had it replaced ($950, mostly parts) and haven't had a problem since. New ECU took three days to ship and 30 min to install.

Own: 1989 328 GTS
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post #3 of 3 Old 10-25-2012, 08:28 AM
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Your manual should state, but if you don't have go to ferraridatabase.com for a copy.

What color were the lights? Red or Yellow. Most likely, to me, the CATs on the left side getting a bit rich.

others are better equipped to answer you question on the fly than I. IF RED I typically turn off quickly, wait and see if it returns after a five min. wait.

if yellow, it will most likely go away after a bit of rest, where RED is more needing some attention IMO.

Did this car sit for too long before being used?

Guide to the Galaxy: Don't Panic
Rik -- LAH !

1990 Mondial T Cabriolet SN 86247 : Red/Tan
1995 456 GT 2+2 SN 99987 : Roso Metalizzato [Fer 311/C] & Tan
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