Car rocking - ACE problem?

[jwb]

Family member called to say that on stopping at a light the car started rocking from side to side on a smooth road - naturally scared a young driver who stopped the car and on re-start it drove normally.

Could this be an ACE problem? I occasionally see the Amber warning light come on but it generally goes away on restart and never seen the red one. I will get to a Nanocom to see if there are any faults logged but I don't think ACE faults are.


Would appreciate any guidance.

[Modelsp]

JWB
could be one of 3 things
1.air in system needs bleeding with Nanocom
2.one of the inertia sensors is faulty,one up top behind rearview mirror and one under drivers sill panel inside
3.was in traffic beside one of Nippons best with DoofDoof music going full boar.

[sierrafery]

If the thing becomes annoying remove the ACE relay, you'll get the amber warning on and the system will go into locked bars condition which will make it act like on conventional anti roll bars and drive it so untill you can plug in a tester to see the stored fault code... find somebody with Hawkeye, Lynx or T4 for that cos nanocom might misslead you in the ACE area... as long as the system wasnt drained there's no way for air to get in but if you have a speedo correction unit fitted this might disturb the ACE if the signal is connected to the SLABS output, also if you have some serious lift and bigger tyres you need to recalibrate the accelerometers for that(but avoid nanocom for this particular issue)

i dont blame nanocom cos it's a brilliant tool just that when it comes to ACE it is not 100% reliable, i made more tests for that and got different fault codes than with Hawkeye for ACE and Hawkeye is built with the original T4 protocol so no doubts with it

[jwb]

I don't have a speedo correction unit, have a 50mm lift with SLS and running standard tyres on the original 18" rims. I run 265/75 16 on another set of rims for off road so nothing really radical.


Will get the faults looked at and see where we go from there.


thanks