Thread: SLS Valve Block

Firstly welcome to AULRO
If you trawl through all the posts on SLS you will find it is your air bags/springs.
Your symptoms match in every way.
The valve blocks are very reliable as are the sensors and compressors(if the water is kept out of them.
Briefly a valve block can be had new for about $350 inc. from Rovacraft, Ebay UK sometimes have them cheaper, pay nearly $700 or more from LR.

Do not buy new air bags from the US, they are rubbish despite using the OEM bag section, the assembly is flawed and reliability is luck of the draw.
The bags you should buy are made by Dunlop for LR and can be bought for $315 AUD at your door from Paddock Spares in the UK or from Airbag Man here for around $600 AUD at your door, if you dont want to wait acouple of weeks.

Your compressor will not supply air to the bags with any doors open after startup.
If you keep running it with this problem expect a new compressor soon.

Everyone here with your symptoms will tell you to raise the vehicle to off road height and soap the bags with a squirter bottle of detergent/ soapy water and wait for the bubbles, you will find the fault.

IMO its your bags. Changing them is about a 15 min job each side, for even the most average person.

Cheers

If it was the airbags, surely the valve block would allow air through it.
I disconnected the airbags from the Valve Block and did a simple "finger of the hole" test on each output of the valve block that should be feeding the bags. There was basically 0 airflow while the compressor was running.

Is there something fancy about the valve blocks that I'm missing? It doesn't make sense to be the bags - no air is getting to them when the compressor is running.

Originally Posted by jeffgowlett

If it was the airbags, surely the valve block would allow air through it.
I disconnected the airbags from the Valve Block and did a simple "finger of the hole" test on each output of the valve block that should be feeding the bags. There was basically 0 airflow while the compressor was running.

Is there something fancy about the valve blocks that I'm missing? It doesn't make sense to be the bags - no air is getting to them when the compressor is running.

Are the doors closed?
There is nothing special about the valve block. Just a pair of solenoid valves, one for each side. The third valve is for exhaust.
Have you done the bag leak check yet?
Until you do a thorough bag leak check, you could be chasing yor tail.

cheers

Originally Posted by strangy

Are the doors closed?
There is nothing special about the valve block. Just a pair of solenoid valves, one for each side. The third valve is for exhaust.
Have you done the bag leak check yet?
Until you do a thorough bag leak check, you could be chasing yor tail.

cheers

Yes the doors are closed and the compressor is running (I can hear it and feel it working).
I have checked the left bag for leaks and nothing (haven't checked the right one yet). At the moment there is no air in the bags as the valve block isn't letting any air flow through it when the compressor is running.

Originally Posted by jeffgowlett

...
Where can I buy a Valve Block for a D2 SLS System and how much should I pay for one?
....

Before getting a new valve block, I would check to make sure there is voltage at the valve block solenoids. If the SLABS ECU is not telling the valves to open, they won't open.
It could be a bad connection somewhere.
Check the voltage at the ECU first, then confirm the same voltage is at the solenoid.
Circuit diagrams on the RAVE cd are very handy if you can read them.

I agree that it is odd that both side would drop to the bump stops simultaneously if it is an air spring problem.

Good luck,
Alan

Thanks for the tip, I didn't think of that - that would be a good way of distinguishing between valves and ecu or wiring between the two.

I'll have to dig out my rave cd.
Thanks.

only one of my springs was leaking but it would drop both sides overnight, still not worked out how or why, but dont discount the springs just because only 1 is leaking, my theory is the car is trying to level itself at night when it cant turn the compressor on, so dropping air out of the higher side.

you could disconnect the bags from the comp while you research more,,

this will also test the bags,,,