VW Vortex - Volkswagen Forum banner
1 - 17 of 17 Posts

·
Registered
Joined
·
178 Posts
Discussion Starter · #1 ·
This is why I see for my ECU:

Part No SW: 06J 997 026M
HW: 06J 906 026 AF


In googling the HW - I find ECUS online but they are for PASSATS not Tiguan.

How can I know what to buy without having to worry about reprogramming vs just worrying about the immobilizer programming?


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
178 Posts
Discussion Starter · #3 ·
You have to have the exact part #
Unless you know it's an updated part or superseded to a different #.
Depends on year, make and model of car for immobilizer.

Good Luck
Thanks ordered the exact one.
I pulled the one I have to double check.
I was told by a mechanic that the ECU is what is causing my coolant temp sensor fault.

Be that as it may - is this why potentially why the lower rad line is not filling correctly? Basically the coolant bottle does not send enough coolant into the system and it just sits there.

Are these two problems likely related it does it sound like an issue or air in the system. The mechanic told me he bled the system.


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
178 Posts
Discussion Starter · #5 ·
Need more info to help.
Year, make, model, engine and vin#
Good Luck
Why do you need the vin to answer a general question about the ecu and coolant. Respectfully. You have helped me stan067 with stuff before and I appreciate it. But I have the part number question dialed in just not the real reason why coolant would not flow cause or a faulty sensor (or in the case a bad ecu giving fake data from sensor)


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
1,097 Posts
Just need data to tell you about programing to try and help.
All I know is you found a used ECU from a Passat and I believe it was for a Tiguan.
General rule is auto scan from VCDS to get help. Helps us help you.
No big deal. Didn't think it a secret. LOL
Good Luck
 

·
Registered
Joined
·
72 Posts
Thanks ordered the exact one.
I pulled the one I have to double check.
I was told by a mechanic that the ECU is what is causing my coolant temp sensor fault.

Be that as it may - is this why potentially why the lower rad line is not filling correctly? Basically the coolant bottle does not send enough coolant into the system and it just sits there.

Are these two problems likely related it does it sound like an issue or air in the system. The mechanic told me he bled the system.


Sent from my iPhone using Tapatalk
A sensor will not cause a coolant flow issue. Blocked hoses, air in the system and a defective water pump can cause coolant flow issues. Improper coolant flow can also give false sensor readings.
 

·
Registered
Joined
·
178 Posts
Discussion Starter · #10 ·
Sorry don’t mean to give you guys a hard time. Nice to have help here. I have figured out which ECU I need and it’s meant to arrive soon.

It’s a 09 Tiguan CCTA engine. As of now the ECU thinks the coolant temp sensor is broken. Hoping the new ECU fixes this.

The code is P0177. Is this coolant temp sensor is responsible for the circulation of coolant through the lower return rad coolant line?


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
1,097 Posts
It makes no sense?

12620 - Sensor for Fuel Composition / Quality (G446)
P0177 00 [040] - Implausible Signal

What does this code have to do with coolant temp?

CCTA is a gas motor correct? The code I believe is a diesel code?

No coolant sensor is responsible for coolant flow. Water pump and thermostat control flow.

I am confused! :unsure:

Good Luck
 

·
Registered
Joined
·
178 Posts
Discussion Starter · #12 ·
It makes no sense?

12620 - Sensor for Fuel Composition / Quality (G446)
P0177 00 [040] - Implausible Signal

What does this code have to do with coolant temp?

CCTA is a gas motor correct? The code I believe is a diesel code?

No coolant sensor is responsible for coolant flow. Water pump and thermostat control flow.

I am confused! :unsure:

Good Luck
Sorry meant p0117.


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
1,097 Posts
Your a character for sure.
You read this?

Water pump, thermostat and coolant temp sensor are all basically 1 unit. Called "thermostat/coolant pump module".
Did you replace water pump?
Did you replace coolant temp sensor that is in water pump?
G62 is in module. (water pump)

You are all over the place with info.
Your talking about Rad hose. "circulation of coolant through the lower return rad coolant line"
That is not correct. It's just a hose doesn't control anything. Water pump circulates the coolant.
Thermostat opens to exchange hot coolant with cold coolant in rad.
The temp sensor in the hose is not the G62 coolant temp sensor. It is a rad outlet temp sensor. Code is for G62 in water pump.

Good Luck
 

·
Registered
Joined
·
178 Posts
Discussion Starter · #14 ·
Your a character for sure.
You read this?

Water pump, thermostat and coolant temp sensor are all basically 1 unit. Called "thermostat/coolant pump module".
Did you replace water pump?
Did you replace coolant temp sensor that is in water pump?
G62 is in module. (water pump)

You are all over the place with info.
Your talking about Rad hose. "circulation of coolant through the lower return rad coolant line"
That is not correct. It's just a hose doesn't control anything. Water pump circulates the coolant.
Thermostat opens to exchange hot coolant with cold coolant in rad.
The temp sensor in the hose is not the G62 coolant temp sensor. It is a rad outlet temp sensor. Code is for G62 in water pump.

Good Luck
I believe the g62 sensor is located under the throttle body. There may be 3 sensors on my car. Was looking at diagrams online for this make/model/year


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
1,097 Posts
You have to remove intake manifold to get at sensor. PITA
I would never change the sensor alone. Too much work to get at it.
Perfect way is:
New water pump. I use the updated aluminum unit with aluminum nipple.
New seals for injectors.
New intake gasket.
New drive belt for water pump at rear of balance shaft. (Left hand thread nut.)
And at this time de-carbon the intake valves.
PITA and costly.

Good Luck
 

·
Registered
Joined
·
1,097 Posts
Also remove the plug in lower timing case and inspect timing chain tentioner.
If old style replace! If new style count the teeth if you see 6 or 7 then you have chain stretch. Bad New!!
All this need to be done or bad thing happen!

Good Luck
 
1 - 17 of 17 Posts
Top