Odd One, 2012 C4 Intermittent Indicators

[Sloppysod]

Hi, my neighbour has just come in to me and says his Sister-in-laws C4 needs a new drivers seat belt to solve an issue..

The problem is the indicators work sometimes but not others, randomly.

Seems a bit odd to me, any ideas - Cheers

Oh new Seat beltbset is about £350!

[GiveMeABreak]

That's a new one on me!

Sounds more like an earth, comms unit or fusebox issue Stu.

[Sloppysod]

That's a new one on me!

Sounds more like an earth, comms unit or fusebox issue Stu.

Cheers Mark,
My Thoughts exactly, I have told them to let me run a full diagnostics check on it, I think the garage who looked at it only have a generic diagnostic kit.
When I get the codes I will be back for some help if I have not spotted the obvious!! - Wish me luck!

[GiveMeABreak]

Don't forget to get the VIN whilst you're at it.

[Sloppysod]

Hi Marc,
Taken a bit of time but here we are, the VIN is VF7**************[VIN obfuscated, can be read by forum staff]. I carried out a full Global Check and found six faults, what do you think?

1st Pass

• Built-in Systems Interface BSI2010 ( 2 Faults )
  B132B 15 - Button backlighting fault
  B1805 62 - Starter fault

• Engine management ECU HDI_SID807_BR2 ( 2 Faults )
  P11B2 - Measurement of the EGR exchanger bypass position.
  U1213 - Intersystems CAN.

• Engine relay unit BSM_2010 ( 2 Faults )
  B113D 15 - Right-hand dedicated daytime lamp fault
  B113E 15 - Left-hand dedicated daytime lamp fault

Manually cleared two of the faults, and then carried out a BSI reset
Both DRL Bulbs were Okay.
This is the final global test

• Built-in Systems Interface BSI2010 ( 1 Faults )
  B132B 15 - Button backlighting fault

• Engine management ECU HDI_SID807_BR2 ( 2 Faults )
  P11B2 - Measurement of the EGR exchanger bypass position.

• Engine relay unit BSM_2010 ( 2 Faults )
  B113D 15 - Right-hand dedicated daytime lamp fault
  B113E 15 - Left-hand dedicated daytime lamp fault

[GiveMeABreak]

This will be the same for B113D 16, but for the Left-hand DRL:

Fault Code:	B113D 15
Description of Fault:	Right-hand dedicated daytime lamp fault: Short circuit to positive or open circuit. Description of the diagnostics: Lamps controlled Open circuit or short circuit to positive detected for 2 seconds Conditions of activation of the diagnostics: Engine running.
Conditions for Fault to clear:	Absence of malfunctioning and activation/deactivation of the control
Downgrade Modes whilst Fault is active:	-
Symptoms:	Unwanted activation of the lamp (without control) The lamp cannot be activated
Suspect Areas:	Headlamp Engine fusebox Electrical harness

I don't have the specific descriptor for B132B 15, except for it's 'Button backlighting fault: Open circuit or short circuit to positive'.

Fault Code:	P11B2
Description of Fault:	Measurement of the position of the EGR exchanger by-pass: Short circuit to positive Description of the diagnostics: Voltage higher than 4,8 V for 500 ms. Conditions of activation of the diagnostics: Engine running
Conditions for Fault to clear:	Driving for 5 minutes from a cold engine, until the coolant temperature reaches 80°C
Downgrade Modes whilst Fault is active:	-
Symptoms:	Noise
Suspect Areas:	EGR exchanger with bypass Position switch for the EGR exchanger by-pass Electrical harness Connectors

[Sloppysod]

Cheers Marc, I am in Scotland for 17 days now and it looks that I will have to run the checks again.

As both issues could be down to the fact that the engine was not running for long during the tests - my error rushing - I should have told them to wait until I come back from holiday!
However, I am pleased that neither related to the indicator fault - I was hoping for a residual fault to be held in the cars memory.
Apologies if I have wasted you time - I'll have the engine running all the time - next time!!.