sprinter 2003 313cdi brake problem

[UKJeffP]

Hi all

I have a brake pedal that when the engine is running will pump up to hard but will then slowly go to the floor. The pedal is solid when not running.

I have to date. changed the master cylinder and servo for new ones. No Change.

I notice oily patch under the abs unit so today I changed that for an exchange unit. No change except I now have ABS ESP and TC lights on and cannot make them go out.

Help !!!!!!!!

Jeff

 

[television]

Hello and welcome,, you must have disturbed the wheel sensor when you changed the caliper, the pedal sounds like air in the system, if there are no leaks

 

[UKJeffP]

Hi Television, thanks for your speedy reply.

Have not touched calipers, just bled system after changing the ABS unit. I have had problem for long while and have bled system several times. Being old school my first thought was the Master Cylinder. I changed servo at same time (both new). I have not used any brake fluid since it started (just that I used to bleed system about 3 litres now).

Would replacing the ABS unit require any ECU/ABS reset. Or should I assume replacement unit is faulty and put old unit back on which had no warning lights showing (I need shares in a brake fluid company lol).

I have Carsoft 7.4 but unfortunately it is showing a PC cable fault so until I get a new cable I cannot read error codes. I did however see and ABS erase error code section on software which is why I wondered if a ECU/ABS reset was required.

Jeff

 

[television]

Hi Jeff Sprinters are not my line, could you PM me the full VIN number and I can look on the workshop info