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D2 Cruise control not working

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Old May 4, 2021 | 05:01 PM
  #21  
Sean Maginness's Avatar
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I have a 03, cruise control has never worked since I've owned it.

Also, have replaced the radio with a double DIN one.
And have LED brake bulbs.
No error code(s), two different Land Rover specialists have not been able to figure out what the problem is.
I also have hacked up brake light wiring and some bird's nest of wires that I'm guessing were for a trailer harness that I've discovered here and there.

I'm at the point where I might swap the LED bulbs out and see if cruise control works, but then even on all-day drives I never find myself looking to set the cruise control, but the OCD part of me wants it to work.
 
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Old May 4, 2021 | 05:05 PM
  #22  
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Originally Posted by Sean Maginness
I have a 03, cruise control has never worked since I've owned it.

Also, have replaced the radio with a double DIN one.
And have LED brake bulbs.
No error code(s), two different Land Rover specialists have not been able to figure out what the problem is.
I also have hacked up brake light wiring and some bird's nest of wires that I'm guessing were for a trailer harness that I've discovered here and there.

I'm at the point where I might swap the LED bulbs out and see if cruise control works, but then even on all-day drives I never find myself looking to set the cruise control, but the OCD part of me wants it to work.

I’m glad you said it, the sole reason I’m digging so far into this is because my OCD wants it to work. I’m just gonna start with the ECU and slowly replace each part of all the components of the CC and see where that gets me.
 
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Old May 4, 2021 | 05:35 PM
  #23  
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Originally Posted by Jon.P
So the gap that the RAVE shows is what I see in my vehicle currently but what Im seeing is what seems to be a lot of slack in the line if I pull directly on the line. Im refereing to the cable for the cruise control not the throttle.

Also Side note, I have the RAVE workshop book for:
1. Land Rover Discovery Series 2 Workshop Manual 1999-2003 MY
2. Discovery Series II WORKSHOP MANUAL - 1999MY ON

Do you know what the difference between to 2 are and what "MY" stands for on each?

I have a 2003 Land Rover Discovery 2 4.6 V8
The page that I cited has both throttle and cruise adjustments on it.
MY means Model Year.
 
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Old May 4, 2021 | 05:39 PM
  #24  
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Originally Posted by mollusc
The page that I cited has both throttle and cruise adjustments on it.
MY means Model Year.
model year that makes sense! Any idea the difference between the two manuals though?
 
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Old May 4, 2021 | 05:43 PM
  #25  
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Originally Posted by mollusc
The page that I cited has both throttle and cruise adjustments on it.
MY means Model Year.


 
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Old May 4, 2021 | 05:48 PM
  #26  
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If I knew, I would have said.
Just use the one in the RAVE.
 
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Old May 4, 2021 | 05:50 PM
  #27  
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Also, there are a lot of threads on here noting how LED tail/brake lights will often cause some systems to not work. I don't remember details but I'm sure they should be easy to find.
 
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Old May 4, 2021 | 05:51 PM
  #28  
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Originally Posted by mollusc
If I knew, I would have said.
Just use the one in the RAVE.
ok but they are both in the rave 🤷🏽‍♂️
 
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Old May 4, 2021 | 06:35 PM
  #29  
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Originally Posted by mollusc
No. That's an indication that the cable from the vacuum unit to the throttle body needs adjustment.
My CC surges for a couple miles when I first turn it on and then it stops. I guess I should check the cable?
 
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Old May 4, 2021 | 09:32 PM
  #30  
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Same here! I'm designing my cab to look like an airplane with a bunch of switches and lights!
 
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