no front indicators/fog lights since doing abient temp sensor

Pete_901 · 20th February 2018, 20:10

changed my ambient temp sensor. had to disconnect the plug for the indicators and fog lights in the n/s/f wing to resistance check the wirings for the temp sensor because it was playing up. plugged the plug back in and left my work and have no indicators or fogs on the front? unplugged the plug and plugged it back in again and still the same? its 100% connected properly.

I also now have self levelling headlights which didn't work before. strange! any ideas?

genpk · 21st February 2018, 12:06

Unplug the wiring loom again, spray some crc electrical cleaner into it and see if it fixes the issue . Seems it could only be a bad connection or damaged wiring ?

klarzy · 21st February 2018, 13:44

You have scared the com network....
Disconnect battery do full 30 mins...

Den · 21st February 2018, 17:00

I've similar probems (power fold mirrows won't, ATC digital temp. setting goes from "22 C" to "Er"), after I replaced a blown side light bulb after a Canbus error. I'll try the battery disconnect (30 mins) and let the forum know results.
Thanks in advance.

suzublu · 21st February 2018, 17:20

Quote:

Originally Posted by Den

I've similar probems (power fold mirrows won't, ATC digital temp. setting goes from "22 C" to "Er"), after I replaced a blown side light bulb after a Canbus error. I'll try the battery disconnect (30 mins) and let the forum know results.
Thanks in advance.

Try fuse 4

Pete_901 · 21st February 2018, 18:47

Thank you il try that now and let you know!

Den · 22nd February 2018, 22:29

Thanks suzblu.
My problem is, mine's a facelift and the Haynes book only covers mk1 but it's supposed to be 1999 - 2006. The Owners handbook lists F4 as "screen washer pump" only. The nearest to your description (in the Mk2 Handbook) is F11 "mirrows, ATC, audio" I've checked F11 (multimeter) and it's fine.
Did the battery thing but still have the same problem.
Any help from anyone would be appreciated.
p.s. no canbus error shown.

klarzy · 23rd February 2018, 06:50

Quote:

Originally Posted by Den

Thanks suzblu.
My problem is, mine's a facelift and the Haynes book only covers mk1 but it's supposed to be 1999 - 2006. The Owners handbook lists F4 as "screen washer pump" only. The nearest to your description (in the Mk2 Handbook) is F11 "mirrows, ATC, audio" I've checked F11 (multimeter) and it's fine.
Did the battery thing but still have the same problem.
Any help from anyone would be appreciated.
p.s. no canbus error shown.

Haynes is great as a jacking pad....
Get a copy of rave
Can bus is not issue here but one of the other 2...
Sounds like you are taking the bus voltage below threshold...
Disconnect your adaption and do the full 30 min battery off again.... if problem clears you have the answer...
It's the only thing that connects the faulting systems..

Den · 6th April 2018, 23:42

Thanks klarzy but none of that has changed. I've changed the ATC and got RAVE but the ATC diagnostic showed no faults. RAVE indirectly suggests that the ATC is in default mode. The drivers door mirror control (folding) has also reverted to the passenger mirror adjust on start up but can still be used for the driver's mirror adjustment, is this a default mode?

The original symptom occurred whilst driving back from Leverington (A1M) when the side light failed and then cleared then failed etc. and this continued for the 2 hour drive.

Could the BCU or ECU fault/error register be full and needs to be cleared?

Any help would be appreciated.

I do worry that this great British marque will no longer be servicable because the Engineers will no longer be alive, anywhere in Europe, to help.

klarzy · 7th April 2018, 09:16

Quote:

Originally Posted by Den

Thanks klarzy but none of that has changed. I've changed the ATC and got RAVE but the ATC diagnostic showed no faults. RAVE indirectly suggests that the ATC is in default mode. The drivers door mirror control (folding) has also reverted to the passenger mirror adjust on start up but can still be used for the driver's mirror adjustment, is this a default mode?

The original symptom occurred whilst driving back from Leverington (A1M) when the side light failed and then cleared then failed etc. and this continued for the 2 hour drive.

Could the BCU or ECU fault/error register be full and needs to be cleared?

Any help would be appreciated.

I do worry that this great British marque will no longer be servicable because the Engineers will no longer be alive, anywhere in Europe, to help.

Check the wiring looms for abrasion over the engine bay front members...
the ones that come from the back of the headlights...

20th February 2018, 20:10	#1
Pete_901 Regular poster Mg Zt Dark Fantasy 6/7 Join Date: Jun 2016 Location: Birmingham Posts: 68 Thanks: 0 Thanked 1 Time in 1 Post	no front indicators/fog lights since doing abient temp sensor changed my ambient temp sensor. had to disconnect the plug for the indicators and fog lights in the n/s/f wing to resistance check the wirings for the temp sensor because it was playing up. plugged the plug back in and left my work and have no indicators or fogs on the front? unplugged the plug and plugged it back in again and still the same? its 100% connected properly. I also now have self levelling headlights which didn't work before. strange! any ideas?

21st February 2018, 13:44	#3
klarzy This is my second home none but not gone Join Date: Mar 2013 Location: March, Cambs Posts: 16,437 Thanks: 894 Thanked 4,247 Times in 3,025 Posts	You have scared the com network.... Disconnect battery do full 30 mins... __________________ [SIGPIC][/SIGPIC]….All praise Bananaswan….

21st February 2018, 17:00	#4
Den Regular poster Rover 75 Saloon Join Date: Mar 2007 Location: Slough Posts: 95 Thanks: 14 Thanked 7 Times in 7 Posts	"You have scared the com network" I've similar probems (power fold mirrows won't, ATC digital temp. setting goes from "22 C" to "Er"), after I replaced a blown side light bulb after a Canbus error. I'll try the battery disconnect (30 mins) and let the forum know results. Thanks in advance.

22nd February 2018, 22:29	#7
Den Regular poster Rover 75 Saloon Join Date: Mar 2007 Location: Slough Posts: 95 Thanks: 14 Thanked 7 Times in 7 Posts	"You have scared the com network" Thanks suzblu. My problem is, mine's a facelift and the Haynes book only covers mk1 but it's supposed to be 1999 - 2006. The Owners handbook lists F4 as "screen washer pump" only. The nearest to your description (in the Mk2 Handbook) is F11 "mirrows, ATC, audio" I've checked F11 (multimeter) and it's fine. Did the battery thing but still have the same problem. Any help from anyone would be appreciated. p.s. no canbus error shown.

6th April 2018, 23:42	#9
Den Regular poster Rover 75 Saloon Join Date: Mar 2007 Location: Slough Posts: 95 Thanks: 14 Thanked 7 Times in 7 Posts	"You have scared the com network" Thanks klarzy but none of that has changed. I've changed the ATC and got RAVE but the ATC diagnostic showed no faults. RAVE indirectly suggests that the ATC is in default mode. The drivers door mirror control (folding) has also reverted to the passenger mirror adjust on start up but can still be used for the driver's mirror adjustment, is this a default mode? The original symptom occurred whilst driving back from Leverington (A1M) when the side light failed and then cleared then failed etc. and this continued for the 2 hour drive. Could the BCU or ECU fault/error register be full and needs to be cleared? Any help would be appreciated. I do worry that this great British marque will no longer be servicable because the Engineers will no longer be alive, anywhere in Europe, to help.

21st February 2018, 12:06	#2
genpk Posted a thing or two Rover 75 Saloon MGZT Join Date: Jul 2012 Location: Perth, AUSTRALIA Posts: 1,662 Thanks: 3 Thanked 461 Times in 299 Posts	Unplug the wiring loom again, spray some crc electrical cleaner into it and see if it fixes the issue . Seems it could only be a bad connection or damaged wiring ?

21st February 2018, 18:47	#6
Pete_901 Regular poster Mg Zt Dark Fantasy 6/7 Join Date: Jun 2016 Location: Birmingham Posts: 68 Thanks: 0 Thanked 1 Time in 1 Post	Thank you il try that now and let you know!