488 GTB Limp Home Mode (Multiple dash errors)

[MaverickV12]

The initial message was deleted from this topic on 23 January 2023 at 18:56

[bennno]

Stop being a tightwad, take it to a garage get them to plug in an obd reader and it will give a code that will indelicate likely cause.

A single faulty abs sensor can cause all of those issues simultaneously.

[deggles]

To have that many errors I reckon it's a fault on the CAN bus, i.e. a wiring problem or a failed control unit (which can result in bad termination) rather than just a single sensor. Needs a fault code reader to find out what's actually going on - get it to someone who knows what they're doing with the proper software rather than just a generic scan tool.

[bennno]

deggles said:

To have that many errors I reckon it's a fault on the CAN bus, i.e. a wiring problem or a failed control unit (which can result in bad termination) rather than just a single sensor. Needs a fault code reader to find out what's actually going on - get it to someone who knows what they're doing with the proper software rather than just a generic scan tool.

Nope. Single abs sensor can do all of those. Just had a full dashboard of similar lights up on a bmw (abs, traction, stability, limp home) was a single abs sensor.

[h0b0]

The wrong size wheels/tyres can cause this. Do you have after market wheels?

[andrew]

simple things first
are tyre pressures all good ?

[bennno]

andrew said:

simple things first
are tyre pressures all good ?

If they weren’t then the tpms would go off by itself.

[Caddyshack]

My initial thought was abs sensor.

If you have changed the tyre sizes you may need to re-calibrate something.


Anti gravity batteries save a lot of weight, if you want to save weight they are very good and not an expensive way to save 15kg compared to other weight saving options.

[MDL111]

Had the same error messages on the FF from time to time, but in my case was always solved by disconnecting the battery and then it didn’t reappear for a long time

[bennno]

MaverickV12 said:

I've changed the rear 305/30/20 for 315/35/20

The other day I took for for a 50+50 motorway run and nothing at all

That’s possibly your issue and potentially would invalidate your insurance, what made you go wider + Increased profile? That’s +6%

[willy wombat]

Am I understanding you properly? You’ve got £150+k of car that you want to go touring in shortly but it’s giving you grief. You plan to take it to “someone” tomorrow but they may not have the right kit to diagnose it because Ferrari hasn’t released it. But you won’t take it to a franchised dealer because…..what? It may cost you a few bob?

[h0b0]

MaverickV12 said:

h0b0 said:

The wrong size wheels/tyres can cause this. Do you have after market wheels?

I've changed the rear 305/30/20 for 315/35/20

The other day I took for for a 50+50 motorway run and nothing at all

If the car doesn’t have sensors, changing the tyre size will confuse the st out of the ABS system. Even if you do have sensors in the tyres, it can still cause.

SuperSpeedersRob on YouTube had this happen to his 458.

[Gibbo205]

MaverickV12 said:

I've changed the rear 305/30/20 for 315/35/20

The other day I took for for a 50+50 motorway run and nothing at all

That is your issue!

The ESC+E-Diff have set tables on the ECUs for rolling radius and when this goes beyond that the traction and E Diff system can’t work properly and thus errors are thrown.

You will find the issue will happen the most in the highest gear at above 50mph. If you drive around in lower gears it is likely to happen less but top gear will cause the faults.

Go back to standard tyre sizes and all shall be fine.

Also people fit anti gravity batteries to save weight, around 15kg and for the built in jump start function.

[RT964]

I had something similar about 18 months ago in my 458 and that was down to a broken wire to the front ABS sensor. Took about 3 hours with a specialist Ferrari engineer to diagnose and fix.

[DW91]

MaverickV12 said:

The car is 6 years old, it says 11000 on the clock, but I don’t know if to believe this, so heaven knows what the mileage is, it might be right.

I don’t think the 488 is easily clocked compared to some of the older ones… I believe the mileage is stored in a few different computers. May be wrong, but I believe it’s in a few and stored in the ECU. Happy to be corrected if I am wrong.

Hope you get your issue sorted.

[F355GTS]

My first thought would be a failing battery particularly as you say you don't use it much, having said that wrong tyre size won't help the sensors

[bennno]

MaverickV12 said:

bennno said:

That’s possibly your issue and potentially would invalidate your insurance, what made you go wider + Increased profile? That’s +6%

My insurance is pretty good and I tell them when I change things, but you are quite correct to mention it. It fills the wheel arches nicely and makes the Speedo perfectly correct compared to the SatNav. I've had 2 Garmin stand alone SatNavs clocking my speed and its perfect with these tyres.

Of course if its making a mess of everything .......

Have you changed tyres all round to +6% above standard or just on one axle?

[ANOpax]

MaverickV12 said:

I've changed the rear 305/30/20 for 315/35/20

The other day I took for for a 50+50 motorway run and nothing at all

When did you change the rear tyres? About the same time or just before these problems started cropping up?

Like Bennno, I’ve also had wheel speed sensor failures on a 6 year old BMW cause the full house of warning lights and it’s a problem which got progressively worse over time. So if you’ve been running the out of spec tyres for a long time before the problems appeared then I’d suggest that it’s a speed sensor issue. If the problems appeared shortly after you changed the tyres then I’d suggest it’s a tyre issue.

Even if it isn’t a tyre issue, you need to do something about the mismatch between front and rear circumferences as it’ll wreak havoc with the operation of the stability control systems. There’s tolerance built in for uneven tyre wear and the use of winter tyres but you’ve blown way past that with upsizing by 5.5% at the back and doing nothing about the front. Either upsize the front tyres as well or go back to stock on the rears.

Edited by ANOpax on Monday 22 August 08:55

[trashbat]

On much cheaper cars, all of that stuff in the OP happening at once is electrical failure, most easily experienced through running the battery flat. Low voltage throws each and every control unit into failure mode.

I do get that a sensor for something like the diff might throw everything downstream into failure, but it seems to me that you have diverse enough failures that it's probably core voltage. I suppose a way to look at this is: what failures have you not got?

I know you've replaced the battery but that's not the only cause. Perhaps a bad connection or bad earth or similar might do it, but I'm not an auto electrician.

Edited by trashbat on Monday 22 August 08:29

[Gibbo205]

Why are you not listening to people, it is the tyre size, it is a well known issue to people who change the tyre stagger to beyond 5% difference causes the ECU's to get very upset and throw lots of error codes as the rolling radius is beyond coded parameters.

GO BACK TO STOCK TYRE SIZES, disconnect the battery for 10 minutes and then re-connect following the correct procedure in the manual, the car will be much happier.