Author Topic: Headlight leveling sensor faulty??? HELP!!!  (Read 19244 times)

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Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #15 on: August 10, 2014, 03:14:18 PM »
Which service manual lists this sensor?

This one     http://www.mazda3forums.co.uk/workshopmanual/       Body / Accesories -  Lighting systems - Auto Levelling Sensor Removal/Installation

The sensor is mounted on top of the rear axle on the passenger side of the cars centreline.
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Offline jackcramerr

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #16 on: August 10, 2014, 03:42:35 PM »
http://postimg.org/image/gaks744rf/

Spent a lot of time and even asked someone else to find something similar to the diagram found in service manual. But no, can't see anything even remotely resembling it. No wires or cable that gives a clue.


Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #17 on: August 10, 2014, 04:08:54 PM »
Ok. This, coupled with the introduction of a malfunction light leads me to believe that the design or location has changed at some time.  Perhaps another member with a 2006 model could chime in sometime with their slant of the location.
However the "Bloggs" test is still a viable scenario. Try it tonight. Even if it fails it still might not be the sensor that is faulty. There is also the Control Module to consider. If you can visibly see the lights moving  then as I said before, I think it's a warning lamp problem. Possibly the connection with the Control Module.
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Offline jackcramerr

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #18 on: August 10, 2014, 04:12:16 PM »
Thanks. Waiting for dark and then I will report.

Also, will this fail MOT?

Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #19 on: August 10, 2014, 04:25:21 PM »
If the lights are levelling OK then I don't think you have a problem. If they do not level, then definitely a fail. MOT states if the car is fitted with self levelling as original equipment, then it must function.
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Offline jackcramerr

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #20 on: August 10, 2014, 05:33:20 PM »
Willpower

I request a favor. Please could you mark on the picture I posted or some other picture so I make sure I am looking at the right place for the sensor. I am very grateful Thanks.
Also where will be the module located?

Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #21 on: August 10, 2014, 06:18:38 PM »
I'll see what I can do. The control  module is behind the glove box  (which you will have to remove)

Here >>>

The instructions are in the workshop manual  for which you have the link already

There is also a walkthough here http://www.mazda3forums.co.uk/index.php?topic=1541.0    for fitting a new glovebox illumination mod which gives you step by step instructions for removing the glovebox.

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Offline jackcramerr

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #22 on: August 12, 2014, 05:02:53 PM »
I removed the glove box and spent about 5-6 hours figuring how to remove the Autolight sensor module. Couldn't figure it out so gave up.

For anyones reference, the module is located at top-right and black in color. Denso Part 031800-0270. The part number is engraved on the side facing the engine so a picture is not possible. It is held by a metal braket and it seems it will just slide through but it doesn't. The metal bracket is held by one screw from the back i.e. threaded and screwed from the side facing the engine. Thus no way to access it. The area is enough for two fingers and nothing more. So one can feel the screw but cannot do anything about it. Wonder how anyone got it there in the first place!

After hours of struggle the module is still there, it just rattles now because of the brute force I applied but that is about it. I could not remove the wiring harness as well.

I also tried to read OBD codes but this 'Auto levelling' warning does not show up.



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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #23 on: August 15, 2014, 07:46:50 PM »
Just to keep this thread updated: The lights do not adjust itself with load. Asked mazda and they pointed to the sensor.

I asked mazda about the part's price and they quoted about 250 GBP. They pointed out that they have received many orders for this part as the 'lever' on the sensor breaks. The guy said that the sensor is located on the right hand side  rear passenger side just above the cross member.

I later went to an electrician. He said he replaced one with broken lever last week and he said he would bet on the lever being broken. Not fixable. This guy said that the sensor is located on the right hand side driver side wheel!!!

If weather permits, I will remove the wheels  on the right side and have a look. I hope I find it this time.

Offline jackcramerr

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #24 on: September 13, 2014, 01:45:32 AM »
The sensor is located at rear right passenger side for UK models.

I couldn't find the sensor as the dealer sold me the car without it!!!

Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #25 on: September 13, 2014, 09:49:42 AM »
The sensor is located at rear right passenger side for UK models.

I couldn't find the sensor as the dealer sold me the car without it!!!

?? What do you mean they sold the car without it ?  If you have Xenon lights then the self levelling function complete with the sensor, comes as standard equipment. That is of course unless some prior owner was an idiot and removed it.  Have you put this car through an MOT yet ?

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #26 on: September 13, 2014, 01:05:44 PM »
MOT is due next year.

I took the car to an electrician and he called me and asked if I bought this car recently. I was surprised how he knew and he showed me the mounting holes and said it was removed recently. Showed me the hanging connector as well.

The dealers are not responding and dodging me by either not picking up the call or saying xyz person isn't in and xyz is the person to handle it. Been a month now since I had informed them.

I managed to find a used sensor but I do not have nuts and bolts for mounting. Any ideas about the spec of these bolts? I have their part number: Bolt - 99479-0620 and nut 51-6H4

Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #27 on: September 13, 2014, 02:21:01 PM »
I'm afraid I have no idea on the bolts.  I would agree that your recourse is with the dealers that sold you the car, if it can be proven that they sold the car to you with the part missing. Because in effect you have been driving illegally since you bought it. Therefore you are perfectly within your rights to make them rectify the situation at their cost if you eventually get hold of them.  Can you not go there in person ?

Further it needs to be done before your MOT. Non functioning of the light levelling system if fitted as OEM is an MOT failure.
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Offline transalper

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #28 on: March 01, 2021, 09:39:50 AM »
Hi. I too have height levelling sensor problem, though is getting the a part without having to purchase a complete unit at mega bucks.  My problem is the bracket that fastens to the chassis that bar is attached to The bracket has broken. Has anyone know where I may  pick one up without paying dealers price.  Thank you in advance for your help.
PS. Is there a means of posting a photo on this forum ?

Offline Willpower

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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #29 on: March 01, 2021, 09:51:50 AM »
I would suggest that the only place to get a suitable bracket if you want to avoid the dealership costs, would be a reputable scrap yard.  Although I would imagine finding a 2009 Mazda 3 would prove to be a difficult task, as most will have already been crushed by now.
 
In the past I have needed some minor welding done (Exhaust strap hanger ) and found a component fabricator locally who was able to make an item that was adequate for the task. Perhaps this is something you could investigate.

Re your Ps. Please read the following.    http://www.mazda3forums.co.uk/index.php?topic=13040.0
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Re: Headlight leveling sensor faulty??? HELP!!!
« Reply #29 on: March 01, 2021, 09:51:50 AM »