Thread: Where to next? Intermittent Cruise Control

Only about a fifth thankfully

Lol. So far fetched. I look forward to hearing how it goes after say six months. I can confirm with a code reader that no faults are logged for the intermittent speaker issue.

The speaker issue is very common. It happens in my car on both sides. I’ve concluded it’s the speakers themselves - in fact there’s a guy online I saw somewhere where he dissects one of the speakers to show how the connection to the voice coil breaks and becomes intermittent. Applying more power by turning up the volume essentially bridges the poor connection and the subsequent cone movement then “joins” the poor connection again until next time the connection becomes poor again. He repairs them using copper braid that’s used for desoldering circuit boards. In my case, one day I’ll just put new aftermarket drivers in.

Originally Posted by DiscoJeffster

Lol. So far fetched. I look forward to hearing how it goes after say six months. I can confirm with a code reader that no faults are logged for the intermittent speaker issue.

You very well may be right and I’ll go over a big bump and it’ll stop working leaving me back at square one. I have no other ideas as to why it is currently working. Maybe I’m fixing it with the volume, maybe it’s me being very superstitious. Writing’s on the wall.

After doing some more stuff with the seat I've lost Cruise Control again.

I suspect some issues lie in the loom underneath.

Took it in for the service and the only fault code logged is P0578.

Loom has been changed, clock spring, switch pack and brake light switch.

Cruise control also depends on engine vacuum lines and throttle position, map and maf sensors.

Check and clean these, check your intske elbow is properly sealed and if you can replace all flex vac lines, or at least check them over.

Since replacing my intake elbow and vac lines, car has been much smoother to drive, especially on c, which used to "hunt" between speeds.

Still bugs me that JLR sets the cc increments at 2kmh...