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#1
10-04-2018, 05:49 PM
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Going absolutely crazy on this 4.8is suspension. Any Help?
Car is an 05 4.8is. Slammed to the ground, "suspension inactive" message, no light on the ride height selector switch.
Arnott struts on both fronts, arnott bag on rear passenger, original used bag on driver rear. pump does not turn on. Tested fuses in rear compartment - they have 12v. I have scanned the car with a generic scanner and found driver front sensor is the only one out of range (-206mm) in comparison to the other 3 readings (between +20 to +60mm). That sensor did have the clip broken that goes around the lower control arm, but was still mounted solidly. I went ahead and replaced it thinking maybe it got damaged. Replaced level sensor, and rod/mount/clip. Still giving the same reading. Pump does turn on when I give it direct power, however, suspension does not raise with pump on and cannot hear any leaks. Scanner is reading Pressure in accumulator says 7.4bar. Scanner reading that all valves are closed. I cant understand why the pump wont turn on in vehicle accessory or running position. Should i throw in a 2axle ride height computer? Is it plug-and-play, or does it need to be coded? I have read both online. Damn thing is expensive....How is it accessed? Do I have to take the glove box out? and how can I test my current module? I have read horror stories of people going broke trying to fix their suspension by throwing parts at it. It looks like im already starting to go down this road. Anyone have any tips? ANY AND ALL HELP IS APPRECIATED! 
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#2
10-04-2018, 06:25 PM
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No guarantees but just on the off chance that your issue is the result of the same chain that has my 05 4.8iS down check the resistor on the transfer case.
 number 3Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#3
10-04-2018, 06:32 PM
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Quote:
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#4
10-04-2018, 06:25 PM
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https://r.tapatalk.com/shareLink?url...9&share_type=t
https://us.autologic.com/news/...mw-...-transfer-case H/T Wpoll Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course Last edited by EODguy; 10-04-2018 at 06:55 PM.
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#5
10-04-2018, 06:37 PM
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My 4.8is was almoust the same....no error in the dash, but i cant rise or go down the suspension from the button.
So i buy the compressor Oring from BAGPIPINGANDY (ebay) , i have changed the oring and voilaaa, the suspension start working...the oring is just 25£, can try this.
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#6
10-04-2018, 06:43 PM
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Quote:
https://www.ebay.com/itm/BMW-X5-E53-...NYMg41&vxp=mtr
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#7
10-04-2018, 06:38 PM
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It is somehow causing a cascade type of problems and mine showed the same issues as you described. Trifecta, Zamboni height, bounces like a kiss inflatable castle, switch blacked out and NO fail safe.
Look on realoem.com and use your ViN to check parts and prices the resistor runs $33.10 Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#8
10-04-2018, 06:56 PM
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What scanner are you using?
Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#9
10-04-2018, 07:05 PM
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Here's a photo of the codes that came up and somehow triggered the suspension to go into transport mode. If yours has the same then you're not going to get it out of transport mode till whatever put it there is fixed (if it's in transport)
 Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#10
10-04-2018, 07:30 PM
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Quote:
1) 64 EHC: Distortion Plausibility 2) 74 EHC: Accumulator pressure remains constant (accumulator filling requested) ------------------------------------------------------------------- Additional information: "4x4" light is on the dash when the car is started. It goes off when the car moves. TPMS light is illuminated and I cannot get it to reset. --------------------------------------------------------------------- Other values: Accumulator pressure - 7.52bar Compressor temp - 90degrees Voltage Terminal 30 - 13.8V voltage sensor FL - 1.81V (new reading -this is the one I replaced) voltage sensor FR - 3.14V Voltage sensor RL - 2.73V Voltage Sensor RR - 3.04V When Vehicle is on the lift (wheels all the way dropped): Deviation Ride level FL - (-83mm) (new reading - this is the one I replaced) Deviation Ride level FR - (+138mm) Deviation Ride level RL - (+172mm) Deviation Ride level RR - (+192mm) When Vehicle is on the ground (wheels all the way tucked into the fenders): Deviation Ride level FL - (-204mm) (new reading - this is the one I replaced) Deviation Ride level FR - (+20mm) Deviation Ride level RL - (+45mm) Deviation Ride level RR - (+63mm)
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