Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Model
Stock
Porsche 911
991 : 2011- 10
997 : 2004- 67
996 : 1997-2005 45
993 : 1993-1998 11
964 : 1989-1993 4
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 0
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 2
Porsche Other Models
Classic : 1950-1965 1
Boxster : 1997- 16
Cayman : 2005- 13
Cayenne : 2003- 10
Macan : 2014- 1
Panamera : 2009- 3
912-914-924-928-944-968 3
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Body Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Mon Jul 17, 2017 10:09 am    Post subject: 987 front fog lights and PSM question Reply with quote

Hi all,

Wondering if you can shed some light on a few issues that I have with my 987 05 2.7 Boxster.

1) The front fog lights do not work ... I think I should check the fuse first before replacing the bulbs, but unfortunately I do not have a fuse diagram...I googled it, and found a diagram but could not locate which one is the front foglight fuse on the halogen version 987...could someone tell me which 1 it is please?
2) The PSM failure light comes on every time after about 20 minutes of driving on the motorway at speeds of more than 60mph... it cancels itself when I switch off and re-start the engine, and never comes on around town. What could this be?

Thanks for your help![/list]
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3448
Location: Sussex


PostPosted: Mon Jul 17, 2017 6:37 pm    Post subject: Reply with quote

If you pull the fuse cover off then there should be a booklet listing what all the fuses are for on the cover .

I take it the headlight switch does have the symbol for front and rear fog lights on it ?

Day runners or home lights spring to mind if not .

I think but not sure that there are options for lights in the pcm .. thats more an owners thing than a mechanics as i dont really delve into pcm options Smile

For the fault then it will need a code reader and the code read out as there are many things it could be im afraid .

A guess would be a speed sensor on one of the wheels dropping out at speed due to a weak signal ..
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Tue Jul 18, 2017 1:20 pm    Post subject: Reply with quote

Demort wrote:
If you pull the fuse cover off then there should be a booklet listing what all the fuses are for on the cover .

I take it the headlight switch does have the symbol for front and rear fog lights on it ?

Day runners or home lights spring to mind if not .

I think but not sure that there are options for lights in the pcm .. thats more an owners thing than a mechanics as i dont really delve into pcm options Smile

For the fault then it will need a code reader and the code read out as there are many things it could be im afraid .

A guess would be a speed sensor on one of the wheels dropping out at speed due to a weak signal ..


Thank you for the reply...unfortunately I do not have the booklet, and although I think I found a copy online, I cannot read it (stupid). Would just help to know exactly which fuse to check Question
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3448
Location: Sussex


PostPosted: Wed Jul 19, 2017 7:17 pm    Post subject: Reply with quote

Try this ..

Also does the head light switch have the x2 symbols for front and rear fog lights ?

Its just im wondering if they are the home lights .. switch onto home then lock the car and see what works .

If they are fog lights then youll need a tester as its a control unit fault i expect .. possibly codeing .. but always worth checking if theres a fuse first Smile
_________________
Mechanic

7pm - 9pm
 



Fuses.jpg
 Description:
 Filesize:  44.1 KB
 Viewed:  1799 Time(s)

Fuses.jpg


  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Thu Jul 20, 2017 4:03 pm    Post subject: Reply with quote

Demort wrote:
Try this ..

Also does the head light switch have the x2 symbols for front and rear fog lights ?

Its just im wondering if they are the home lights .. switch onto home then lock the car and see what works .

If they are fog lights then youll need a tester as its a control unit fault i expect .. possibly codeing .. but always worth checking if theres a fuse first Smile


So would I be correct in saying that the fuse should be A5?

It does have the x 2 for the front and rear fog lights on the switch, and also it has home (which doesn't work either)...hmm I just realised - based on this it has to be either the bulbs or the fuse...can't be the switch
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3448
Location: Sussex


PostPosted: Thu Jul 20, 2017 6:27 pm    Post subject: Reply with quote

Fuse would be A 7 , you also have C7 but other things wont work if its that one .

Home lights not working And front fog lights , check the fuse and the bulbs as it may be simple but i think this is going to end up a little bit more involved , the control unit responsable is the front end control unit .

A vehicle handover useing a tester would be the next step if its not fuse or both bulbs .
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Tue Jul 25, 2017 8:49 am    Post subject: Reply with quote

Demort wrote:
Fuse would be A 7 , you also have C7 but other things wont work if its that one .

Home lights not working And front fog lights , check the fuse and the bulbs as it may be simple but i think this is going to end up a little bit more involved , the control unit responsable is the front end control unit .

A vehicle handover useing a tester would be the next step if its not fuse or both bulbs .


OK I checked A7...seems fine, will check bulbs...and then take it from there.

Thanks for the help so far Smile
 
  
View user's profile Send private message
   
isysman
Zolder


Joined: 22 Apr 2011
Posts: 5495
Location: Cheshire


PostPosted: Tue Jul 25, 2017 8:58 am    Post subject: Reply with quote

Dermot would it not be A3&4? What he is calling fog lights maybe his side lights?
_________________
911 GT2RS Build
987 Boxster S 3.4

 
  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Tue Jul 25, 2017 9:12 am    Post subject: Reply with quote

isysman wrote:
Dermot would it not be A3&4? What he is calling fog lights maybe his side lights?


OK you know you have the main headlight housing with the main beam and dipped beam...and then you have the white rectangular housing on the bumper below the headlight which houses the fog light and the sidelight...the sidelight bulbs work fine, but the fog light bulbs don't.

I have the fog light option on the control panel (i.e. turn the switch to side light or beam position and pull it out, and a green foglight light comes on the dash next to the switch)...however the fog lights don't work.

I have tried putting the switch in the "home" position...from my understanding this should activate the fog lights once you press the "unlock" on the remote...again - no luck.
 
  
View user's profile Send private message
   
isysman
Zolder


Joined: 22 Apr 2011
Posts: 5495
Location: Cheshire


PostPosted: Tue Jul 25, 2017 9:42 am    Post subject: Reply with quote

Ok that clears it up. Yes they are your fog lights. To turn them on you pull the switch once in the lights on position.
_________________
911 GT2RS Build
987 Boxster S 3.4

 
  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Tue Jul 25, 2017 9:47 am    Post subject: Reply with quote

Yeah, I read somewhere that you might need to program them to work, but I guess if it has the home option and the fog light switch then they should work...otherwise no point putting them there Dont know
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3448
Location: Sussex


PostPosted: Tue Jul 25, 2017 6:43 pm    Post subject: Reply with quote

Just to clarify things as im getting a little confused now lol .. is your headlight switch the same as the image below .. ie does it have both symbols on the left side of the switch .

If it does then its a codeing fault , blown bulbs or a possible wiring fault .. ie not plugged in .

Im no expert on function operation but the home setting is for when you lock the car so you have illumination when you walk away from the car .. at least thats what i thought so try that please.

Also if you have a PCM fitted then hit the set button and see if theres an option for day runners .

I blame Porsche .. if they fitted the same stuff to every vehicle then i would know what i was talking about

Razz


This stuff is just sooo much easier when i have the car to look at sigh
_________________
Mechanic

7pm - 9pm
 



light switch.jpg
 Description:
 Filesize:  9.56 KB
 Viewed:  1548 Time(s)

light switch.jpg


  
View user's profile Send private message
   
rus_987
Trainee


Joined: 12 Jul 2017
Posts: 56



PostPosted: Tue Jul 25, 2017 6:49 pm    Post subject: Reply with quote

Demort wrote:
Just to clarify things as im getting a little confused now lol .. is your headlight switch the same as the image below .. ie does it have both symbols on the left side of the switch .

If it does then its a codeing fault , blown bulbs or a possible wiring fault .. ie not plugged in .

Im no expert on function operation but the home setting is for when you lock the car so you have illumination when you walk away from the car .. at least thats what i thought so try that please.

Also if you have a PCM fitted then hit the set button and see if theres an option for day runners .

I blame Porsche .. if they fitted the same stuff to every vehicle then i would know what i was talking about

Razz


This stuff is just sooo much easier when i have the car to look at sigh


Yes sir that's the exact same switch that I have. Once I change the bulbs if it still don't work I might have to bring it to you.
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3448
Location: Sussex


PostPosted: Tue Jul 25, 2017 6:52 pm    Post subject: Reply with quote

lol .. bless you .. ok im happy now .. they should work so start with the bulbs Smile
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum