Hi Guys,
Bought my second Z in June at the peak of the summer.
Just tried the rear window heater and although the light comes on, nothing seems to be happening at the back.
Have run a quick search, but can't see anything much. Any thoughts?
TIA!
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Summer purchase - hides the winter issues....
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- Member
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- Location: Peterborough
Summer purchase - hides the winter issues....
2nd Z4, Auction find, 2007 3.0si Sport, 45k, Silver Grey, 224 Alloys. Retro Cruise
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
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- Lifer
- Posts: 4621
- Joined: Fri Dec 31, 2010 9:38 pm
Summer purchase - hides the winter issues....
probably the wires going to the HRW are chafed or have become disconnected, have you had a look?
18 Z4s owned to date.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
Current: 2.5i Titan silver
Daily driver: 480bhp M140i Shadow edition.
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- Member
- Posts: 137
- Joined: Fri Jul 14, 2017 9:51 pm
- Location: Peterborough
Summer purchase - hides the winter issues....
I've had a look, but can't see anything obvious. Is there a known point for wearing? The wire disappears behind that material, so it's hard to get a good look.
2nd Z4, Auction find, 2007 3.0si Sport, 45k, Silver Grey, 224 Alloys. Retro Cruise
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
- Ewazix
- Lifer
- Posts: 4721
- Joined: Sun May 02, 2010 5:30 pm
- Location: Somerset
Summer purchase - hides the winter issues....
Start simple, make sure transport mode has not kicked in when a battery was changed or went flat, this shuts down non essentials like the rear screen and air-con. The fix requires re-coding.
If it's not transport mode then get a basic multimeter or 12v current tester / bulb and see if current is getting to the positive tab or elements, these will only be live with engine ignition on. If you have power there then there is probably a break in the elements.
If there is no power check the relevant fuses behind the glove box (20 & 25 according to Adamski's previous post viewtopic.php?f=3&t=38888 ).
If those are good there is also a relay to check, should be marked K13 per the realoem pics. http://www.realoem.com/bmw/enUS/showpar ... Id=61_4109
Remove it and check for activation (click) when terminals 1 and 2 are energised with a 12v source, and that you have continuity using a multimeter on terminals 5 and 3 (set to ohms then meter should beep)
If that's good then it may be disconnected wire (roof out sometime maybe?) or loom damage.
If it's not transport mode then get a basic multimeter or 12v current tester / bulb and see if current is getting to the positive tab or elements, these will only be live with engine ignition on. If you have power there then there is probably a break in the elements.
If there is no power check the relevant fuses behind the glove box (20 & 25 according to Adamski's previous post viewtopic.php?f=3&t=38888 ).
If those are good there is also a relay to check, should be marked K13 per the realoem pics. http://www.realoem.com/bmw/enUS/showpar ... Id=61_4109
Remove it and check for activation (click) when terminals 1 and 2 are energised with a 12v source, and that you have continuity using a multimeter on terminals 5 and 3 (set to ohms then meter should beep)
If that's good then it may be disconnected wire (roof out sometime maybe?) or loom damage.
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
Fiesta Ecoboost
2018 Cooper S Countryman
Fiesta Ecoboost
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- Member
- Posts: 137
- Joined: Fri Jul 14, 2017 9:51 pm
- Location: Peterborough
Summer purchase - hides the winter issues....
Ok thanks- very detailed, really appreciate it!
I have no idea about Transport mode as I bought it from auction and have no history, but the A/C works.
Looks like I'll need to get some tools out and someone who knows about electrics.
Cheers!
I have no idea about Transport mode as I bought it from auction and have no history, but the A/C works.
Looks like I'll need to get some tools out and someone who knows about electrics.
Cheers!
2nd Z4, Auction find, 2007 3.0si Sport, 45k, Silver Grey, 224 Alloys. Retro Cruise
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
- Sidewaze Samm
- Senior Member
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- Joined: Wed Feb 07, 2018 1:11 pm
- Location: Sth. Manchester/Cheshire border
Summer purchase - hides the winter issues....
Did you get this sorted?HyperGrade wrote: ↑Mon Sep 18, 2017 1:28 pm Hi Guys,
Bought my second Z in June at the peak of the summer.
Just tried the rear window heater and although the light comes on, nothing seems to be happening at the back.
Have run a quick search, but can't see anything much. Any thoughts?
Similar story - we bought the car in summer and now discovered HRW doesn't work at all.
- Switch illuminates
- Not transport mode, as everything else works correctly
- Both fuses OK
- Continuity of circuit checked at B pillar, so appears no issues to window elements or wiring to/from window.
- But... relay was missing New relay from dealer fitted - makes no difference.
Any ideas?
2008 E85 3.0si
Space Grey, Dream Red New England heated Msports.
Xenons, MFSW, cruise, PDC, wind deflector.
ZHP, stubby, gloss black grilles, DLV box, gaptech, no CDV.
Space Grey, Dream Red New England heated Msports.
Xenons, MFSW, cruise, PDC, wind deflector.
ZHP, stubby, gloss black grilles, DLV box, gaptech, no CDV.
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- Member
- Posts: 137
- Joined: Fri Jul 14, 2017 9:51 pm
- Location: Peterborough
Summer purchase - hides the winter issues....
Sorry, it just cleared itself (no pun intended)Sidewaze Samm wrote: ↑Mon Nov 05, 2018 10:37 amDid you get this sorted?HyperGrade wrote: ↑Mon Sep 18, 2017 1:28 pm Hi Guys,
Bought my second Z in June at the peak of the summer.
Just tried the rear window heater and although the light comes on, nothing seems to be happening at the back.
Have run a quick search, but can't see anything much. Any thoughts?
Similar story - we bought the car in summer and now discovered HRW doesn't work at all.
- Switch illuminates
- Not transport mode, as everything else works correctly
- Both fuses OK
- Continuity of circuit checked at B pillar, so appears no issues to window elements or wiring to/from window.
- But... relay was missing New relay from dealer fitted - makes no difference.
Any ideas?
Not sure how it can go from dead to working without intervention, but it’s worked fine ever since. Best of luck!
2nd Z4, Auction find, 2007 3.0si Sport, 45k, Silver Grey, 224 Alloys. Retro Cruise
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)
Previous: 2003, 2.5i Sport, Sterling Grey (2006-2010)