Airbags and Height Sensors

Graham Allen · Mar 8, 2018

Ok folks, I have now replaced the offending offside airbag, both height sensors, and need to fit the nearside airbag, but I stupidly miss-placed the new olive for the valve so dont know if I can aquire a complete valve of just an olive so nearside bag will have to wait, ( any ideas if I can get either of these or an alternative)
My question is now the vehicle is sitting high at the front and lower at the back, I have twenty inch Range Rover alloys and the clearance at the back from the tyre to the body arch is about 2 inches and about 6 at the front Do I need to get it re-callibrated

brian47 · Mar 8, 2018

I don't quite understand what you're asking or the current condition of your car.
Have you replaced both air bags and re-inflated them?
The size of the wheels should have no real bearing on the suspension height, what is being set is the height between the axle and the body. A side effect of that will be the height above the ground at which the body rides depending on the diameter of the wheels.
The height that you should measure is from the centre of the road wheel to the wheel arch, not the liner, which should be 473 mm +/- 15 mm (18.6 in +/- 0.6 in).
You can use a Nanocom or Hawkeye to reset this value if it's not right, however the reading on the code reader will be "a value" not the actual reading.

Graham Allen · Mar 8, 2018

brian47 said:
I don't quite understand what you're asking or the current condition of your car.
Have you replaced both air bags and re-inflated them?
The size of the wheels should have no real bearing on the suspension height, what is being set is the height between the axle and the body. A side effect of that will be the height above the ground at which the body rides depending on the diameter of the wheels.
The height that you should measure is from the centre of the road wheel to the wheel arch, not the liner, which should be 473 mm +/- 15 mm (18.6 in +/- 0.6 in).
You can use a Nanocom or Hawkeye to reset this value if it's not right, however the reading on the code reader will be "a value" not the actual reading.

Thanks, just trying to understand the system

sierrafery · Mar 8, 2018

Yes, you need recalibration especially if you had a sensor fault or you unplugged it with battery connected

Hellastony · Mar 9, 2018

Graham Allen said:
Ok folks, I have now replaced the offending offside airbag, both height sensors, and need to fit the nearside airbag, but I stupidly miss-placed the new olive for the valve so dont know if I can aquire a complete valve of just an olive so nearside bag will have to wait, ( any ideas if I can get either of these or an alternative)
My question is now the vehicle is sitting high at the front and lower at the back, I have twenty inch Range Rover alloys and the clearance at the back from the tyre to the body arch is about 2 inches and about 6 at the front Do I need to get it re-callibrated

+1 for re-calibration.
Not quite sure why you need an olive now, as IIRC all currently manufactured bags both Dunlop and Contitech are PUSH fittings. You just trim the end of the pipe to make sure it is square, then push it into the fitting on top of the bag. The system with olives is what was used on the old bags, BUT if you need an olive if you contact Heathy (Paul) at Discovery 2 Parts on 01206 211623, he may be able to find you one.

Tony

Airbags and Height Sensors

Graham Allen

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brian47

Well-Known Member

Graham Allen

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sierrafery

Well-Known Member

Hellastony

Active Member

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