Suspension warnings - actual ASR failure or erroneous sensor? - Maserati Forum
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post #1 of 20 Old 06-11-2019, 07:13 PM Thread Starter
 
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Suspension warnings - actual ASR failure or erroneous sensor?

A while back I got an intermittent suspension warning – the little yellow shock absorber icon – and some associated failure warnings, I think ASR. Only popped up 2 or 3 times, went way with a restart, and the dealer couldn’t find any codes.

When these warnings pop up are they likely to actually be real – i.e. traction control is actually disabled - or just an incorrect sensor message?

There was a thread on this a few months back but I can’t find it. I think I recall it saying that this was the result of something being loose in the suspension, and that the services themselves were actually not affected.

I have a last minute opportunity to track the car this weekend and don’t really want to find out the hard way that suddenly I don’t have traction control…

Thanks,
Rob.

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post #2 of 20 Old 06-11-2019, 11:41 PM

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I’m having a hard time understanding why the dealer couldn’t find any codes. I had the intermittent yellow shock that would reset but it would always be stored until cleared. A good Maserati OBD reader can tell you which wheel is throwing the code. A good mechanic can tell you if the shocks are OK. In my case the right front was the problem, the shock was good so I replaced the sensor. Problem solved.

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post #3 of 20 Old 06-11-2019, 11:44 PM

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I wish I can remember what the issue was when the same warnings appeared on my car, and then disappeared the next day, never to be seen again ( the Brigadoon effect , for those of you old enough to remember the movie ) That was more than a year ago, I think . . I also remember a thread or two here that discussed this yellow shock I con ;I believe one of the culprits was a low voltage battery , but can’t recall if the other was some kind of sensor issue. Pretty sure it was not a mechanical problem with the suspension itself. Just “ pretty sure “ but not 100 % , but if the light does not come back, drive the car hard here and there before you go to the track and if it doesn’t feel odd, and the light does not come back , I think it’ll be safe .

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post #4 of 20 Old 06-12-2019, 01:29 AM

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I have this problem in hot weather, the suspension will crap out almost daily at some point, but always go away when restarted.

My shop told me that unless the failure goes on and stays on, or they can somehow get to happen in their custody (which they never will because I don't go there in hot weather), they will never be able to properly diagnose the cause. They could start throwing parts at it based on what the codes say, but the code saying it is a particular shock is just as likely to be spurious when it is doing this intermittent thing, and could actually be the main computer.

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post #5 of 20 Old 06-12-2019, 02:15 AM

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Find out which wheel is throwing the code and change the sensor.

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post #6 of 20 Old 06-12-2019, 03:24 AM
 
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Sensor for what? Reading a fault code on car and just replacing what it says is risky deal..You can come out wrong a good bit of the time...Jason

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post #7 of 20 Old 06-12-2019, 03:41 AM

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Originally Posted by [email protected] Enzo`s Atlanta View Post
Sensor for what? Reading a fault code on car and just replacing what it says is risky deal..You can come out wrong a good bit of the time...Jason
Look this is my experience, the code said that the right front acceleration sensor was indicating a problem. My Indy said the shock looks good. I replaced the right front acceleration sensor...problem solved.

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post #8 of 20 Old 06-12-2019, 06:30 AM
 
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Originally Posted by Cynabar View Post
Look this is my experience, the code said that the right front acceleration sensor was indicating a problem. My Indy said the shock looks good. I replaced the right front acceleration sensor...problem solved.
It was the same with mine, a faulty acceleration sensor.
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post #9 of 20 Old 06-12-2019, 11:18 AM
 
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Look this is my experience, the code said that the right front acceleration sensor was indicating a problem. My Indy said the shock looks good. I replaced the right front acceleration sensor...problem solved.

You just said sensor, but didn't say what kind...Some folks on here think the shock has a sensor in it or something...That was what I was getting at.....Jason

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post #10 of 20 Old 06-12-2019, 04:33 PM

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If an acceleration sensor is the problem, doesn't ( or shouldn't ) the computer put the car in "limp mode" or some similar transmission / gear control for safety purposes ? Same if a shock or some other suspension component is bad and detected by whatever other sensors are associated with it ? I'm just asking, since I don’t really know our cars function in that respect, but even a 15 year old Mercedes ECU throws the car into limp mode for arguably less critical reasons ; alternator and battery alerts, knock sensors , coolant temps deviations, etc.

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post #11 of 20 Old 06-12-2019, 04:42 PM
 
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Yes, when the suspension fault is on the suspension defaults to full stiff...The ABS/TC(ASR) is using the sensors as well for traction control so its default is to shut off the BS system...People always want to just disconnect systems on modern cars when they don't want to pay for it to be repaired, but the problem is you really can't as all the information is shared between the various modules and it just makes the entire dash light up...Jason

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post #12 of 20 Old Yesterday, 01:28 AM

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Originally Posted by [email protected] Enzo`s Atlanta View Post
You just said sensor, but didn't say what kind...Some folks on here think the shock has a sensor in it or something...That was what I was getting at.....Jason
Damn Jason, cut us some slack. There is only one sensor on the right front suspension everyone knows what we’re talking about. Why can’t you just roll with it sometimes.

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post #13 of 20 Old Yesterday, 03:47 AM
 
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I have 2300 post on here.. So I can roll with it brother...Your tone is a little off. Not everyone gets how skyhook works...You seem mechanically inclined and get how sensors work etc....Not everyone does...Some people think the shock has a sensor etc...It is large group of people with different degrees of knowledge on here...J

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post #14 of 20 Old Yesterday, 04:14 AM

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My suspension fault puts the suspension in full stiff but nothing else shuts off and no other alarms are activated. MSP is still operational. (Maserati Stability Program, i.e. traction control).

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post #15 of 20 Old Today, 12:37 AM Thread Starter
 
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Thanks for all the replies.

I'll resist the obvious schoolboy humour, but net/net if I do get some warnings it'll either go limp or full stiff, but either way should remain basically functional.

Sounds good,
Thanks
Rob

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