Thread: Does orange ACE light mean pump has failed?

Originally Posted by Dozer2

..... Test drive successful. I was hopeful that my other ACE issue, a metal whirr sound every 10 seconds, would be gone but it is back even louder with the new pump but at least the ACE works.

Shell

Does it have SLS(air bag rear suspension?
If so, could it be the compressor keeping the airbags at correct level .. eg. if you have a wee little air leak?

What's this issue?
DSC_0039.jpg

Thank you sierrafery and Ak83 for the ideas, both are plausible. Really hope I don't need to replace those pipes though, then I'll be back to struggling to prime the ACE pump and bleed the system again.

Interestingly the noise is happening less frequently the more I drive it. No longer sounds like a loud robot cat purring, and I only heard it once on the last drive. Fingers crossed it goes away on its own.

Shell

"Loud robotic cat purring" sounds like SLS air compressor to me.
Compressor location is under the car, in a small box above the chassis, rail kind'a directly under the front passenger seat.
Obviously if it makes this loud robotic cat purring noise, means it's on .. filling rear air bags with air, ie. maintaining rear ride height.

Quick test:
On the centre console you have a switchblock, one switch which is raised suspension for off road mode. Should be near the hazard lights switch. picture on switch is rear raised suspesion with arrow pointing upwards.
If you have SLS, you also have this small switch.
Push that and it raises the rear suspension for more clearance at the back. To acheive this, the SLS compressor needs to run .. ie. "robotic cat purring noise"!

easy test.