Suspension Error Light

The error light just started flashing. This has happened before, and went out after restarting. Did a search and found that others have had this problem, but no resolution.

Any insight into the problem would be appreciated. Thanks!

Attachments 55.2 KB Views: 341 See less See more 2025 Revuelto 2022 EVO RWD Spyder, 2019 SVJ, 2003 Murcielago; 2011 458 -sold Sort by Oldest first 1,180 posts · Joined 2004

Each of the Koni shocks have an internal "motor" that alters the damping rate - 1 of 4 rates. The error light indicates that at least one of the shocks has failed at this operation. Once the system has detected a failure, the error light comes on and the system tries to set rate 3. The system does not remember the failure and thus a restart of the car will start out error free. The koni module has a diagnostic mode to help issolate which corner of the car is having the problem and thats were you have to start.

Note that this has NOTHING to do with the lifting system.

Murciful Discussion starter 2,086 posts · Joined 2011

Thanks gday! Sounds like a trip to the dealer is in order. Car is a 2003 with 19,000.

Is it hurtful to the suspension system to drive on this light for a few hundred miles?

I appreciate your comment that the error light is not caused by the lift system. So the front shocks have a dampening function controlled by this system and also are part of the lift system? I had the lift switches replaced over the winter, and the lift lights flash around 43 mph. They turn off at lower and higher speeds. Mechanic hasn't figured out what the prob is with that yet, but mentioned that the front shocks are very expensive.

2025 Revuelto 2022 EVO RWD Spyder, 2019 SVJ, 2003 Murcielago; 2011 458 -sold 1,180 posts · Joined 2004

Thanks gday! Sounds like a trip to the dealer is in order. Car is a 2003 with 19,000.

Is it hurtful to the suspension system to drive on this light for a few hundred miles?

I would continue to drive it without concern. The failure would have to be very odd to cause more problems.

I appreciate your comment that the error light is not caused by the lift system. So the front shocks have a dampening function controlled by this system and also are part of the lift system?

All the shocks (front and back) have the dampening system. The front shocks have the added lifting feature which, as far as the physical shock is concerned, is only hydraulic operated ie nothing electrical. Thats why the dampening and lifting systems are pretty much issolated from each other.

I had the lift switches replaced over the winter, and the lift lights flash around 43 mph. They turn off at lower and higher speeds. Mechanic hasn't figured out what the prob is with that yet, but mentioned that the front shocks are very expensive.

If the light starts blinking at 43 mph, the system thinks the shocks are raised and is trying to lower them. If you want me to take a guess, I'd say the Koni min pressure switch is broken and nothing to do with the actual shock. When you say "lift switches", what are you refering to?

Murciful Discussion starter 2,086 posts · Joined 2011

I believe that the mechanic replaced the max lift switches. Prior to the replacement, the lift wasn't rising, and the lift light would flash continuously after attempting to raise the front. Now the lift operates, though in my novice opinion it doesn't go up very much. However, the light flashes near 43 mph.

This link is to a discussion between Smoky, Jetfire, and me about their similar issues with the lift light.

2025 Revuelto 2022 EVO RWD Spyder, 2019 SVJ, 2003 Murcielago; 2011 458 -sold 1,180 posts · Joined 2004

Here is how the two switches work.

When you request a raise, fluid is pumped into the shocks. At some point the shocks become full and the pressure will rise rapidly in the KONI block. The max switch is preset to a fix PSI that is design to detect the increasing pressure and signal to the KONI ECU that the vehicle is now raised (pressurized) and will shut down further pumping of fluid. There should never be a reason to adjust this switch. If the switch doesn't operate within a reasonable period of time of fluid pumping, the KONI ECU will then lower the car and flash an error code. A faulty MAX pressure switch is a common cause - especially if there are no leaks from any part of the system. If the MAX switch PSI setting has been lowered (adjusted), then the lifting may stop before the car is fully raised.

When you request a lower, the pressure is released from the shocks. The MIN switch is also preset to a low pressure PSI setting to indicate that the shocks are lowered. If the lift light flashes at 43 MPH, then for some reason the car thinks the shocks are still pressurized and attempts to lower the car. Typically this indicates that the MIN switch is bad. This would be especially true if the car correctly raises and physically lowers when requested.

While the MIN and MAX switches are common failure points, obviously they are not the only possibilities.

Murciful Discussion starter 2,086 posts · Joined 2011

Found this link to info on diagnosing shock failures in Diablos:

Does anyone know if there is a similar system or process to determine which shock is bad in a Murci? My understanding is that the suspension is not part of the the OBD diagnostic system.

Also saw advice from Roytoy.

. that if the shock isn't leaking to not waste money replacing it if you can live with a flashing red light.

1) I'm cool with a flashing red light, as long as there is relative certainty that I'm not driving around on a bad shock, but how can I know that a shock isn't bad?

2) Is shock replacement a reasonable DIY, or am I asking for trouble? Glen's prices on the shocks are $500 -$600 less each than the dealer's price, God bless his soul.

2025 Revuelto 2022 EVO RWD Spyder, 2019 SVJ, 2003 Murcielago; 2011 458 -sold 259 posts · Joined 2007

Found this link to info on diagnosing shock failures in Diablos:

2) Is shock replacement a reasonable DIY, or am I asking for trouble? Glen's prices on the shocks are $500 -$600 less each than the dealer's price, God bless his soul.

You can get the murci shocks rebuilt for much less then replacing them. Murciful Discussion starter 2,086 posts · Joined 2011

Thanks Gasman. Glen gave me pricing on rebuilding shocks as well, which was significantly cheaper.

According to Roytoy's post, rebuilding shocks will not repair the electronic component, which will still cause the error light to flash. So I still have the dilemma of determining which shock is bad, if any, or whether it is simply the electronic mechanism failing. saving me from any replacement at all.

2025 Revuelto 2022 EVO RWD Spyder, 2019 SVJ, 2003 Murcielago; 2011 458 -sold Lamborghini Talk posts 817K members 57K Since 2004

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