Drowned yaw sensors

bigwinn

bigwinn

Elite
 Lincoln UK
Site Supporter
Hi all

Anyone opened up and attempted to repair drowned yaw sensors- specifically facelift ones (the expensive ones)?

I have a drowned one and am interested to see if it can be resurrected

Stuart
 
Hello matey

I sourced one already otherwise I’d have had that off you

How’s that lovely golf working out for you?
 
I’ve opened up the drowned one

It’s fairly clear which chip has failed as a result of the water damage

As far as I can see but would appreciate more eagle eyed members views that the chip is:

Texas Instruments
9385 .1 .0
5at
A1L5

Google throws nothing up immediately

IMG_7098.jpeg
 
I believe you have a hot air station?

This is all difficult and fiddly, you really want a digital microscope. Heat up the chip and lift it off. Then check the rest of the chip to see if there are any shorts.

If no shorts then take a gamble and buy this yaw sensor:

https://ebay.us/m/LQGXxj

Steal the chip off that yaw sensor and put it on the e85 yaw sensor circuit board.
 
Usel said:
I believe you have a hot air station?

This is all difficult and fiddly, you really want a digital microscope. Heat up the chip and lift it off. Then check the rest of the chip to see if there are any shorts.

If no shorts then take a gamble and buy this yaw sensor:

https://ebay.us/m/LQGXxj

Steal the chip off that yaw sensor and put it on the e85 yaw sensor circuit board.
Click to expand...
Would it be worth checking to see if the other yaw sensor works as it is? May need a bit of plug jigging, but if it did then you’d be minted!
 
enuff_zed said:
Usel said:
I believe you have a hot air station?

This is all difficult and fiddly, you really want a digital microscope. Heat up the chip and lift it off. Then check the rest of the chip to see if there are any shorts.

If no shorts then take a gamble and buy this yaw sensor:

https://ebay.us/m/LQGXxj

Steal the chip off that yaw sensor and put it on the e85 yaw sensor circuit board.
Click to expand...
Would it be worth checking to see if the other yaw sensor works as it is? May need a bit of plug jigging, but if it did then you’d be minted!
Click to expand...

Definitely worth trying it first to see if it works.

I'm not electronics expert but I think the chip that has blown is processing signal inputs and then passing them onto the bigger chip to process. So imo the bigger chip is the one that needs to be compatible with the car that it's in.

After looking inside the LCM modules I was expecting there to be differences between a Xenon and Halogen circuit board. They were both exactly the same. There must be different software on one of the chips or maybe they are exactly the same and it's just programming from insta or similar that you select the options you want. There is a seperate circuit board for the actual switches you use to operate the lcm which does have differences. Maybe you can use any LCM as long as you change the circuit for the switches you need.

I know....... I am waffling :rofl:
 
Usel said:
enuff_zed said:
Usel said:
I believe you have a hot air station?

This is all difficult and fiddly, you really want a digital microscope. Heat up the chip and lift it off. Then check the rest of the chip to see if there are any shorts.

If no shorts then take a gamble and buy this yaw sensor:

https://ebay.us/m/LQGXxj

Steal the chip off that yaw sensor and put it on the e85 yaw sensor circuit board.
Click to expand...
Would it be worth checking to see if the other yaw sensor works as it is? May need a bit of plug jigging, but if it did then you’d be minted!
Click to expand...

Definitely worth trying it first to see if it works.

I'm not electronics expert but I think the chip that has blown is processing signal inputs and then passing them onto the bigger chip to process. So imo the bigger chip is the one that needs to be compatible with the car that it's in.

After looking inside the LCM modules I was expecting there to be differences between a Xenon and Halogen circuit board. They were both exactly the same. There must be different software on one of the chips or maybe they are exactly the same and it's just programming from insta or similar that you select the options you want. There is a seperate circuit board for the actual switches you use to operate the lcm which does have differences. Maybe you can use any LCM as long as you change the circuit for the switches you need.

I know....... I am waffling :rofl:
Click to expand...

I’ll keep you posted
 
lol exactly the answer I was looking for :) cheers mate, how did you go with the hot air station? Success? :thumbsup:
 
Vanne said:
lol exactly the answer I was looking for :) cheers mate, how did you go with the hot air station? Success? :thumbsup:
Click to expand...

Sadly work stops play

I’ll get on it soon and report back

Fingers crossed that it works as it could be a cheap option
 
bigwinn said:
It kills all ABS and DTC functions

Which some would argue is fun!
Click to expand...
Indeed. Only problem is it's a straight MOT failure as the lights stay on.
Although there is an MOT tester in darkest Norfolk, who ignores the lights if your wife works for them. They also don't notice chunks missing out of tyres, or doing emissions tests (if your wife works for them). Big posh outfit, too. Not a dodgy back-street tester. Ask me how I know? :roll:
 
Pondrew said:
bigwinn said:
It kills all ABS and DTC functions

Which some would argue is fun!
Click to expand...
Indeed. Only problem is it's a straight MOT failure as the lights stay on.
Although there is an MOT tester in darkest Norfolk, who ignores the lights if your wife works for them. They also don't notice chunks missing out of tyres, or doing emissions tests (if your wife works for them). Big posh outfit, too. Not a dodgy back-street tester. Ask me how I know? :roll:
Click to expand...

:rofl:

I’d never advocate having friendly mot testers on side but when in Rome
 
bigwinn said:
Pondrew said:
bigwinn said:
It kills all ABS and DTC functions

Which some would argue is fun!
Click to expand...
Indeed. Only problem is it's a straight MOT failure as the lights stay on.
Although there is an MOT tester in darkest Norfolk, who ignores the lights if your wife works for them. They also don't notice chunks missing out of tyres, or doing emissions tests (if your wife works for them). Big posh outfit, too. Not a dodgy back-street tester. Ask me how I know? :roll:
Click to expand...

:rofl:

I’d never advocate having friendly mot testers on side but when in Rome
Click to expand...
Didn't help me, unfortunately. Only the seller of my Z3. Cost me £500 for both new yaw sensors (used aswell).
MOTed one day with no advisories, next day arrived with me (on a truck) with two completely drowned and rusted yaw sensors. What a coincidence!
 
Pondrew said:
bigwinn said:
Pondrew said:
Indeed. Only problem is it's a straight MOT failure as the lights stay on.
Although there is an MOT tester in darkest Norfolk, who ignores the lights if your wife works for them. They also don't notice chunks missing out of tyres, or doing emissions tests (if your wife works for them). Big posh outfit, too. Not a dodgy back-street tester. Ask me how I know? :roll:
Click to expand...

:rofl:

I’d never advocate having friendly mot testers on side but when in Rome
Click to expand...
Didn't help me, unfortunately. Only the seller of my Z3. Cost me £500 for both new yaw sensors (used aswell).
MOTed one day with no advisories, next day arrived with me (on a truck) with two completely drowned and rusted yaw sensors. What a coincidence!
Click to expand...

Who knew…?!
 
E90 sensor arrived and I’ve popped the case open

The layout of the pcb is different as is the chip that looks damaged on the e85 module (serial number wise)

The connector is different too but the pins used on the connector are the same

I’m going to remove and swap the offending chips to see if they are compatible

IMG_7192.jpegIMG_7193.jpeg
 
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