How often does VW TDI Regen?
When doing mostly city driving my car typically regenerates about every 150-200 miles. However, on long highway drives it will often go 450 to 550 miles between regenerations. If regenerations are not completed normally, it can be even more often. The more aggressive your city driving the more soot will be produced.
How long does TDI Regen take?
The short answer to the question is DPF regeneration can take anywhere between 30 to 45 minutes depending on the soot level accumulated in your truck’s DPF filter.
Can I do a forced Regen?
A forced regeneration can be performed by any service shop with the appropriate diagnostic software. The cost for a forced regeneration varies. Generally, it is between $300-$700 depending on the technician’s required diagnostic time and the length of time your DPF regeneration lasts.
What is TDI Regen?
A forced regen occurs when soot builds up inside the diesel particulate filter (DPF) to the point that the vehicle is no longer operable. When this happens, a driver has to pull over and initiate a self-cleaning process that can take up to 40 minutes — valuable time that could have been spent on the road.
How do I know if my car is doing a regen?
You will know whether active regeneration is taking place by the following symptoms:
- Engine note change.
- Cooling fans running.
- A slight increase in fuel consumption.
- Increased idle speed.
- Deactivation of automatic Stop/Start.
- A hot, acrid smell from the exhaust.
Can a CR-TDI engine do a forced regeneration?
With the newer CR-TDI engines there are 2 different types of regenerations available depending on the actual soot mass/load. If either the calculated or measured soot mass is above 30g but below 40g you can initiate a regeneration while standing (Idle will be raised etc.), a forced regeneration while driving is also possible.
How can I tell when my TDI Regen is done?
Of course, in the winter it’s hard to tell as my car is often in higher idle due to trying to warm up. A scanguage II or an application like Torque Pro on a smartphone coupled with a bluetooth ODB2 reader can tell you when the temps are up over 1000F. Perhaps your TDI’s regen actually had completed before you turned the engine off.
What happens when you turn off the TDI?
Perhaps your TDI’s regen actually had completed before you turned the engine off. Turns out if the car decides to end its regen (stop the post-injection event) while the engine is idling, the idle will remain elevated until the driver gives some form of accelerator input.
What happens to the idle when a Regen is underway?
It really stands out. The idle is a bit higher when a regen is underway. Of course, in the winter it’s hard to tell as my car is often in higher idle due to trying to warm up. A scanguage II or an application like Torque Pro on a smartphone coupled with a bluetooth ODB2 reader can tell you when the temps are up over 1000F.