Thanks - no issues with the air lines? just focus on the compressor and the front struts? For the compressor, is rebuilding worth it or should I go new?
suspension fault and oil leak
2012 Range Rover with 115k miles
A couple weeks ago I received a suspension fault for the driver’s front ride height sensor. When I looked at everything, I noticed the one lower control arm on each side was worn so I ordered both lower control arms for both sides along with ride height sensors for each as well. After swapping everything out and having an alignment done, I was still getting a suspension fault code.
I have a Foxwell scanner with the Land Rover software and it showed C1 A03-21 front left height sensor, similar code for the front right sensor and U04 21-68 invalid data received from ride level control module.
These are listed as intermittent and everything worked but the suspension fault keeps showing up on the dash. I cleared the codes and they came back immediately. Drove it yesterday and after parking it in the garage, the passenger side dropped over the course of the day both front and rear). No additional faults are showing on the dash or through the scanner.
I’ve been reading up on this in the forum (there were no shortage of posts…) and I think I have a plan of attack but wanted to be sure before proceeding.
Thanks for any suggestions.
A couple weeks ago I received a suspension fault for the driver’s front ride height sensor. When I looked at everything, I noticed the one lower control arm on each side was worn so I ordered both lower control arms for both sides along with ride height sensors for each as well. After swapping everything out and having an alignment done, I was still getting a suspension fault code.
I have a Foxwell scanner with the Land Rover software and it showed C1 A03-21 front left height sensor, similar code for the front right sensor and U04 21-68 invalid data received from ride level control module.
These are listed as intermittent and everything worked but the suspension fault keeps showing up on the dash. I cleared the codes and they came back immediately. Drove it yesterday and after parking it in the garage, the passenger side dropped over the course of the day both front and rear). No additional faults are showing on the dash or through the scanner.
I’ve been reading up on this in the forum (there were no shortage of posts…) and I think I have a plan of attack but wanted to be sure before proceeding.
- Since the car will level out when it’s started, I can assume that the compressor is good?
- Check for air leaks at the compressor, reservoir, air supply & each strut (not the valve blocks since a leak can’t be detected there?)
- Clean the filter at the compressor
- Pull the fuse for the suspension and let the car sit. This will indicate if a specific corner is the problem
- It seems like the diagnosis for a bad valve block is a process of elimination. If I can rule out the other potential issues, then the valve block is the culprit.
Thanks for any suggestions.
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I started the truck and let it run for a little bit. The suspension leveled out to some degree. The fender heights are as follows (first measurement is with the vehicle on and the second is about 5 minutes after it was shut off).
FL: 33-1/2" 33"
FR: 33-1/2" same
RF: 31-1/2" 30-1/2"
RR: 31" 30-1/2"
I'll check them again in the morning and see what they are after sitting overnight.
The video is the sound it's making on the passenger side. Does that sound like an air leak? I checked the struts and they are original. Is the best course of action to change both fronts and the compressor? Should I replace the valve block(s) as well?
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One other question, if I have this apart, would it be smart to put new wheel hubs in the front? Current ones are original and have 115k on them. If they are close to life expectancy, I don't want to do them week later after the suspension is back together.
FL: 33-1/2" 33"
FR: 33-1/2" same
RF: 31-1/2" 30-1/2"
RR: 31" 30-1/2"
I'll check them again in the morning and see what they are after sitting overnight.
The video is the sound it's making on the passenger side. Does that sound like an air leak? I checked the struts and they are original. Is the best course of action to change both fronts and the compressor? Should I replace the valve block(s) as well?
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One other question, if I have this apart, would it be smart to put new wheel hubs in the front? Current ones are original and have 115k on them. If they are close to life expectancy, I don't want to do them week later after the suspension is back together.
Thanks - I will probably just swap out the front suspension and be done with it. Is this the correct rebuild kit for the compressor:
Amazon.com: LAND ROVER LR3 / LR4 AIR SUSPENSION COMPRESSOR REPAIR OVERHAUL KIT PART: JPO500010 : Automotive
Buy LAND ROVER LR3 / LR4 AIR SUSPENSION COMPRESSOR REPAIR OVERHAUL KIT PART: JPO500010: Air Suspension Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
Seems like there should be more to it.
Found this one:
For Land Rover Discovery 3 4 LR3 Range Rover Sport Hitachi Compressor Repair Kit | eBay
Find many great new & used options and get the best deals for For Land Rover Discovery 3 4 LR3 Range Rover Sport Hitachi Compressor Repair Kit at the best online prices at eBay! Free shipping for many products!
www.ebay.com
The ebay kit matches this one but it's in the UK
Range Rover L322 - Oem Hitachi Air Suspension Compressor Repair Kit related to C1A2064 Diagnostic trouble code - 4x4 Air Seals
MODEL YEAR VARIENT Range Rover L322 td6 tdv8 2006 -20011/12 3000cc and 3600cc Diesel 4200cc SC Petrol Company info 4x4Airseals – Uk supplier, manufacturer and innovating company of Air suspension compressor related products serving customers in the Uk and worldwide longer than any other...
4x4airseals.com
What you your thoughts about changing out the valve blocks while I'm doing this other stuff?Thanks - I will probably just swap out the front suspension and be done with it. Is this the correct rebuild kit for the compressor:
Amazon.com: LAND ROVER LR3 / LR4 AIR SUSPENSION COMPRESSOR REPAIR OVERHAUL KIT PART: JPO500010 : Automotive
Buy LAND ROVER LR3 / LR4 AIR SUSPENSION COMPRESSOR REPAIR OVERHAUL KIT PART: JPO500010: Air Suspension Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
Seems like there should be more to it.
Found this one:
For Land Rover Discovery 3 4 LR3 Range Rover Sport Hitachi Compressor Repair Kit | eBay
Find many great new & used options and get the best deals for For Land Rover Discovery 3 4 LR3 Range Rover Sport Hitachi Compressor Repair Kit at the best online prices at eBay! Free shipping for many products!www.ebay.com
The ebay kit matches this one but it's in the UK
Range Rover L322 - Oem Hitachi Air Suspension Compressor Repair Kit related to C1A2064 Diagnostic trouble code - 4x4 Air Seals
MODEL YEAR VARIENT Range Rover L322 td6 tdv8 2006 -20011/12 3000cc and 3600cc Diesel 4200cc SC Petrol Company info 4x4Airseals – Uk supplier, manufacturer and innovating company of Air suspension compressor related products serving customers in the Uk and worldwide longer than any other...
Anyone treat these flare fittings for the air lines with something before removing? Since they are original, it could be a PITA to get them out. I'd rather not cut them and refit new ends if I can avoid it.
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