Skip the auto shop - Our mechanics make house calls

Q: Can my seat belt pretensioner be repaired, or does it need to be replaced?

asked by on

i have had a rear end shunt can the seat belt pretentinor on a mercedes e350 coupe be repaired or does it need replacing? The seatbelt retractor pretensioner circuit open fault code on a ethos 9c3a 1st row driver retractor pretensioner circuit open , can this be repaired or is it a complete new belt from Mercedes at £520?

My car has 20000 miles.
My car has an automatic transmission.

Most vehicle manufacturers are very particular about most of their components, but when it comes to supplemental restraint systems (SRSs), such as air bags, pretensioners, and so on, they are most particular. While it has been some time since I’ve worked for Mercedes, they were most particular about SRS components. Any damage to the SRS wiring that was more than 100mm from a connector required replacing the entire SRS harness for the vehicle. Any SRS components that are open, shorted, or faulty in any manner required replacement. No repairs were allowed or recommended. It seems that your only choice is buying a new belt mechanism.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Can my seat belt pretensioner be repaired, or does it need to be replaced?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Seatbelt does not retract

The seat belt retractor is like a clock spring and it sounds like yours has sprung. Any irregularity in the operation of your seat belt is grounds for replacement.. The thing about seat belts is they have that one chance...

Q: How much to replace the two rear suspension coils?

Billing question was sent to CS for the cost of repairing / replacing the rear suspension coils on a 2006 Mercedes-Benz E350.

Q: Bent front axle/tire

Hey there. You might be able to drive the car indefinitely at low speeds, say 35 MPH or below. However, if you are truly seeing that the tire/wheel assembly is out of position, the tire will be quickly destroyed, regardless...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...